Monday, April 20, 2015

Q is for . . .

I'm posting Mad-Cool-Math Nuggets this month.


Image courtesy: Gabrielle

Q is for quadrilateral or a four-sided polygon with four angles. Some common quadrilaterals include rectangles, squares, and parallelograms.

I bet you know what rectangles and square are. Heck, you might even be square, like me. In a parallelogram, like the name implies, the opposite sides must be parallel and equal in length.

One interesting fact about quadrilaterals is that no matter what kind you draw, you can connect the midpoints to make a parallelogram. (Source: The Twelve Most Controversial Facts in Mathematics from The Business Insider)

Here's an example from Wikipedia:
















Image courtesy: Wikicommons

In this picture, the black lines going from A to B to C to D form the grey quadrilateral. The midpoints are E, F, G, and H. The red lines between these midpoints form the red parallelogram in the middle.

Neato.

Did you take geometry in school? Like it? Hate it? For me, ninth grade geometry was special because the teacher turned out to be the mom of my best friend in kindergarden.

88 comments:

  1. Quadrilaterals are cool! Remember how I've mentioned...probably a lot...how I'm no good in math? I was very bad at it in school. Especially algebra. But I LOVED geometry. For the first time I got straight A's in math and all the kids who normally did better than me were getting bad grades. I was the top student that year...and then next year was algebra again. *sighs*

    ReplyDelete
    Replies
    1. It's funny how some people are good at one, but not the other, when it comes to algebra and geometry.

      Delete
  2. HA! I didn't know that parallelogram detail. I like learning something new! I didn't like geometry, but I love shapes--it is the theorem part I was bad at. Seemed less math and more memorizing...

    ReplyDelete
  3. Don't even get me started on geometry, LOL...I was never a big fan of math but I was good at it, but then once I went to college I didn't have to take it anymore so pretty much forgot everything I learned. And then I thought it would be a good idea to have geometry be an important part of my novel...yeah, so that's been hard! I've had to do a lot of research to try and remember everything.

    ReplyDelete
  4. HA! I didn't know that parallelogram detail. I like learning something new! I didn't like geometry, but I love shapes--it is the theorem part I was bad at. Seemed less math and more memorizing...

    ReplyDelete
  5. So, since I was on the Business track in school, back in the day, my math classes revolved around accounting, bookkeeping, taxes, that sort of thing. I was never exposed to algebra or geometry. And I didn’t go to college.
    Much later on in life, I decided that I wanted to pursue a degree. I had to take a bunch of remedial math classes, starting with algebra. It was hard at first, but once I got it, I loved it. But that too was a long time ago. I’ve forgotten everything.
    Your clear explanation along with the graphic made parallelograms easy to understand. Thanks :)

    ReplyDelete
  6. I enjoyed geometry in school. Most fascinating to me was when I studied Einstein's theory of relativity (in university), and got acquainted with Riemann geometry. There are some pretty odd things showing up like negative lengths. Einstein used this kind of geometry to describe space-time >:)

    Cold As Heaven

    ReplyDelete
  7. Well even though I have no clue about half of what you just said, great post! hahahahahahaha!!!! Thanks for popping by my blog :)
    ღ husky hugz ღ frum our pack at Love is being owned by a husky!

    ReplyDelete
  8. I loved geometry, but I loathed algebra. :)

    ReplyDelete
  9. Hated geometry but love your posts! If only you had been my teacher!

    ReplyDelete
  10. Fascinating! Did not like geometry though.

    ReplyDelete
  11. Great word, just wish I could wrap my head around your example here and how it works! I'll have to show it to my husband and have him explain it to me! Yes, my brain is like that. Lisa, co-host AtoZ 2015, @ http://www.lisabuiecollard.com

    ReplyDelete
  12. I loved Geometry in High School. My son has it coming up now, I hope I remember enough to help him!

    --
    Tim Brannan, The Other Side Blog
    2015 A to Z of Vampires
    http://theotherside.timsbrannan.com/

    ReplyDelete
  13. Can't say I liked geometry but I do like the diagram you posted. It shouldn't work but it does.

    ReplyDelete
  14. Neato is right. Off to check out the link now.

    ReplyDelete
  15. Thanks for the informative article and thanks for visiting my blog. Please come again. :)

    ReplyDelete
  16. I have to say I hated geometry and I *still* can't draw a straight line to save my life... well, maybe to save my life, but only then.... and only if I had a ruler.

    For real :)

    ReplyDelete
  17. In a controversial turn of events, I was kicked out of Geometry in the first quarter. I had upset the teacher so much, while maintaining the highest score, that I was sent to the library for the rest of the year.

    Yeah, as punishment they sent me to the library. That did not have the desired result of making me feel punished.

    ReplyDelete
    Replies
    1. Rebel without a chord, eh? I think throwing me in a library would also be akin to throwing Brer Rabbit in the Briar Patch.

      Delete
  18. He's growing up. It's growing.Please write good things from now on. 토토검증

    ReplyDelete
  19. Thanks for finally writing about That's a really good piece of data. Amazing. 메이저놀이터

    ReplyDelete
  20. Simply unadulterated brilliance from you here 메이저놀이터검증. I have never expected something not as much as this from you and have not confounded me by any reach out of the inventive vitality. I acknowledge you will keep the quality work going on.

    ReplyDelete
  21. Thanks for ones marvelous posting! I really enjoyed reading it, you might be a great author.
    I will be sure to bookmark your blog and will eventually come back later on.제주오피

    ReplyDelete
  22. That is a very good tip especially to those new to the blogosphere.
    Short but very accurate info… Appreciate
    your sharing this one. A must read post유흥전문

    ReplyDelete
  23. It was a great speech, thank you for sharing. 온라인경마

    ReplyDelete
  24. I read your blog and I can't stop my self to read your full blog.Keep up the good work! 온라인바둑이
    ‮‬

    ReplyDelete
  25. Best of luck to your next Blog in future.Thank you for sharing this information.바카라사이트

    ReplyDelete
  26. Click here if you're curious about the photos and videos you can watch at dawn..먹튀사이트

    ReplyDelete
  27. Wonderful article. Fascinating to read. I love to read such an excellent article. Thanks! It has made my 토토사이트검증

    ReplyDelete
  28. this is really fun and enjoyable for me. Thank you guys for sharing this. Click here, if you want to visit our site 안전놀이터

    ReplyDelete
  29. I seriously love your website.. Great colors & theme. Did you create this website yourself? Please reply back as I’m looking to create my own personal website and want to know where you got this from or exactly what the theme is named. Kudos!
    egaon casino

    ReplyDelete
  30. every pressured me to take a look at and do it You’re incredible! Thank you! 토토커뮤니티

    ReplyDelete
  31. best by introducing verification and verification companies. Some information about medicine 먹튀검증

    ReplyDelete
  32. every pressured me to take a look at and do it I look forward to working with you. 먹튀검증

    ReplyDelete
  33. Hi there colleagues, its wonderful paragraph on the topic of tutoringand completely explained,
    keep it up all the time.부산달리기

    ReplyDelete
  34. Fabulous post, you have denoted out some fantastic points, I likewise think this s a very wonderful website. I will visit again for more quality contents and also, recommend this site to all. Thanks. 토토사이트추천

    ReplyDelete
  35. Hey what a brilliant post I have come across and believe me I have been searching out for this similar kind of post for past a week and hardly came across this. Thank you very much and will look for more postings from you. 먹튀검증 and I am very happy to see your post just in time and it was a great help. Thank you ! Leave your blog address below. Please visit me anytime!

    ReplyDelete
  36. While looking for articles on these topics, I came across this article on the site here. As I read your article, I felt like an expert in this field. I have several articles on these topics posted on my site. Could you please visit my homepage? 메이저놀이터순위

    ReplyDelete
  37. You're so interesting! I don't suppose I've read anything like this before.
    So great to find someone with a few unique thoughts on this issue.
    Seriously.. many thanks for starting this up. This site is something that is needed on
    the internet, someone with some originality!
    click me here바카라

    yang

    ReplyDelete
  38. I am regular visitor, how are you everybody?
    This article posted at this website is in fact good
    I 토토사이트

    ReplyDelete
  39. 카지노사이트 It is in reality a great and useful piece of info. Thanks for sharing. 🙂

    ReplyDelete
  40. 스포츠토토 I'm very happy to find this website. I wanted to thank you for your time due to this
    fantastic read!! I definitely liked every part of it and I have you
    saved to fav to look at new things in your site.


    ReplyDelete
  41. 토토사이트 This is really interesting, You are a very skilled blogger.
    I've joined your feed and look forward to seeking more of your great post.
    Also, I've shared your web site in my social networks!

    ReplyDelete
  42. 토토사이트 You really make it seem so easy with your presentation but I find this topic to be really something which I think I would never understand. It seems too complicated and extremely broad for me. I’m looking forward for your next post, I’ll try to get the hang of it

    ReplyDelete
  43. 바카라사이트 Thanks for sharing your info. I really appreciate your efforts and I will be waiting for your further post thanks once again.


    ReplyDelete
  44. 바카라사이트 It’s actually a nice and useful piece of info.
    I am happy that you simply shared this helpful information with us.
    Please stay us up to date like this. Thank you
    for sharing.

    ReplyDelete
  45. Wow, great blog article that will help me grow 토토커뮤니티

    ReplyDelete
  46. I'll come and read every day. It's really nice to have a place like this 먹튀사이트 Wow, great blog article

    ReplyDelete
  47. but I believe it will help a lot in my country wonderful points altogether,Perfect 토토검증

    ReplyDelete
  48. You should take part in a contest for one of the greatest websites on the net. I will recommend this site! 검증놀이터

    ReplyDelete
  49. I have bookmarked your website, the articles if just all bloggers offered the same substance as you, the web would be an obviously better place 토토검증

    ReplyDelete
  50. I don't suppose I've read through something like this before. So good to discover another person Relevant!! Finally 메이저검증

    ReplyDelete
  51. This site seems to inspire me a lot. Thank you so much for organizing and providing this quality information in an easy to understand way. I think that a healthy era of big data can be maintained only when such high-quality information is continuously produced. And I, too, are working hard to organize and provide such high-quality information. It would be nice to come in once and get information.

    Also visit my site:안전토토사이트


    ReplyDelete
  52. Your internet site has great web content. I assume it was an excellent possibility to alter my mind once more after reading this post. I'm composing like you. Would certainly you such as to see my article and also request for comments? 바카라사이트

    ReplyDelete
  53. These articles are exactly what I need. It is very nice of you to share your understanding.
    I have learned interesting things. I have a liking for your posts. Please, upload more and more posts.Click Me Here일본경마


    6YAnGsKIE

    ReplyDelete
  54. I’m very pleased to discover this site. I want to to thank you for ones time for this particularly wonderful read!! I definitely savored every part of it and i also have you saved as a favorite to see new information on your blog. 먹튀검증업체


    ReplyDelete
  55. Thank you a bunch for sharing this with all folks you actually understand what you are speaking approximately! Bookmarked. Please also discuss with my site =).
    We will have a link trade arrangement between us!
    바카라

    ReplyDelete
  56. You made some good points there. I did a Google search about the topic and found most people will believe your blog. 메이저사이트

    ReplyDelete
  57. great and nice article lots of information to read...great person keep posting and keep updating guys..thanks to get an approved e-visa electronically linked to your passport via a simple online application form Eligible travelers for Turkey Visa online can apply

    ReplyDelete
  58. hi!,I really like your writing so much! percentage
    we communicate more about your article on AOL? I need an expert on this area to unravel my problem.
    May be that is you! Taking a look forward to peer you.
    바카라

    ReplyDelete
  59. Great post i must say and thanks for the information. Education is definitely a sticky subject. However, is still among the leading topics of our time. I appreciate your post and look forward to more.
    토토사이트

    ReplyDelete
  60. Link exchange is nothing else but it is only
    placing the other person's web site link on your page at proper place and other
    person will also do same for you. 토토


    ReplyDelete
  61. I appreciate your efforts your way of describing is very simple and different. Now You can easily apply for Kenya e visa through your mobile or pc. No need to meet an embassy

    ReplyDelete
  62. Good information here. I really enjoy reading them every day. I’ve learned a lot from them. Thanks so much for sharing this information.
    무료야설
    휴게텔
    횟수 무제한 출장
    타이마사지

    ReplyDelete
  63. Hello, I am one of the most impressed people in your article. 슬롯사이트 If possible, please visit my website as well. Thank you.


    ReplyDelete
  64. I'm so happy to finally find a post with what I want. 오공슬롯 You have inspired me a lot. If you are satisfied, please visit my website and leave your feedback.


    ReplyDelete
  65. Your article has answered the question I was wondering about! I would like to write a thesis on this subject, but I would like you to give your opinion once :Dsòng bạc

    ReplyDelete
  66. I'm writing on this topic these days, 우리카지노, but I have stopped writing because there is no reference material. Then I accidentally found your article. I can refer to a variety of materials, so I think the work I was preparing will work! Thank you for your efforts.

    ReplyDelete
  67. What I was thinking about was solved thanks to your writing. I have written on my blog to express my gratitude to you.메리트카지노My site is We would be grateful if you visit us.


    ReplyDelete
  68. I finally found what I was looking for! I'm so happy. 우리카지노


    ReplyDelete
  69. When I read your article on this topic, the first thought seems profound and difficult. There is also a bulletin board for discussion of articles and photos similar to this topic on my site, but I would like to visit once when I have time to discuss this topic. 바카라사이트I think it would be nice if you come to if you can solve my problem.


    ReplyDelete
  70. Hey Nice Blog Post Please Check Out This Link for purchase 토토

    ReplyDelete
  71. Thanks for sharing this article. This article was very helpful to me. Keep moving. 슬롯머신

    ReplyDelete
  72. This is a fascinating subject and I hope to learn more about it in the future. 스포츠토토

    ReplyDelete
  73. When did you start writing articles related to ? To write a post by reinterpreting the 메이저사이트추천 I used to know is amazing. I want to talk more closely about , can you give me a message?

    ReplyDelete
  74. I finally found what I was looking for! I'm so happy. 안전한놀이터 Your article is what I've been looking for for a long time. I'm happy to find you like this. Could you visit my website if you have time? I'm sure you'll find a post of interest that you'll find interesting.

    ReplyDelete
  75. This is a really cool article. I really envy people who can write well like you. The content of the text was well drawn in my head and was well understood. You seem to have great writing skills. I will visit often to read articles. I also want my website to be as great as yours. Thank you for your visit.
    정식 토토사이트

    ReplyDelete
  76. Hey sir, Thanks for sharing a nice blog!! Your written content is very impressive. Many people ask, can we do work in Turkey? Yes, indeed. You can working in Turkey with an Turkey visa online. In fact, it is a very fast, cheap and easy way to get a Turkey work visa.

    ReplyDelete
  77. I'm so happy to finally find a post with what I want. 안전놀이터순위 You have inspired me a lot. If you are satisfied, please visit my website and leave your feedback.

    ReplyDelete
  78. Nice Article, Your Tips And Ideas Are Just Awesome. I like The Way You Deliver This Article. Thanks for sharing information. Turkey e visa is an online way to get on your given email. You don’t need to visit the embassy for it.

    ReplyDelete
  79. Your article is easy to read and understand. I would like to read more articles like this. Getting a Turkey visa online is a hassle free process. It saves time and money as well.

    ReplyDelete
  80. Hello, thanks for sharing this content with us, I am fully indebted to you for your help. Ethiopia Business visa, It takes just a few minutes to fill out the online form for Ethiopian Business Visa, Ethiopian Business Visa. Within 1 to 3 working days, you can receive your Ethiopia Visa.

    ReplyDelete

I will do everything in my power to visit commenter's blogs unless I've been abducted by aliens or my children get sick. (If my children get abducted by aliens, I will be very busy, of course, catching up on my sleep.)