Monday, November 16, 2009

Parallel and Pendicular lines

Parallel and Perpendicular lines

Geometry- Shapes and measurements.

Parallel- Describes two lines in the same plane that never cross, or intersect.
- They are marked using arrows.


Here is a picture of parallel lines:


Perpendicular- Describes lines that intersect at right angles. ( 90°)
- They are marked using a small square
Here's a picture of a right angle


Measure the difference from:

A to B
B to C
E to F
F to G
I to J
J to K

They all are 8.9 cm.

Here's a video about Perpendicular lines


Here's the link: http://www.youtube.com/watch?v=Lc3dPkoCOHc

Identify any parallel lines you can find.
AE // BF, EI // FJ, CG // BF, GK // JF, AI // CK


What d0 you notice about parallel lines? they always are the same distance apart no matter where you measure, as long as you measure a perpendicular line.


Identify any perpendicular line segments.


AE __ DF , FE __ AI , BF __ EG , CG __ FH

What do you notice about perpendicular line segments? they all meet at 90° angles.


FOR HOMEWORK!
#1. Are line segments AC and DF parallel?
#2. Are line segments DF and BE perpendicular?
#3. Are line segments AC and BE perpendicular? How do you know?
#4. Would a line segment joining A to D be parallel to a line segment BE? How do you know?

31 comments:

  1. Good job raelynn, it is easy to understand if someone never knew what parallel and perpendicular was. Great job finding all those pictures and using color to show important words. Next time I think you should capitalize the beginnig of a sentence. Other than that great work!

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  2. Awesome post Raelynn! I really liked the video and how you made the tittles stick out more, and how you changed the colors of the font, and the pictures as well. It's easy to understand it.

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  3. Great post, Raelynn! I really liked how you changed the font color on the important parts. This will definitely help anyone who wants to learn what parallel and perpendicular lines are!

    Amazing job!

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  4. Nice post Raelynn! I especially liked the pictures, it made things a lot easier to understand.Could anyone explain the homework to me? I wasn't around when you guys did this.

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  5. You did a great job Raelynn, but your link did not work and you forgot to put in some capital letters. next time you could try changing the font of some words.

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  6. Nice post Raelynn ! I liked how you made the titles stand out. But I didn't understand some of it. I didn't understand the homework part. Since some of us left, we don't know what are the lines and what they look like. Can someone explain it to me?

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  7. Good job Raelynn! This really helped me find out about the homework. But the do says d0 not do. But everything was good.

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  8. Great job Raelynn! This post could make anyone that missed the class know about parallel and perpendicular lines. You also forgot to put some capital letters.

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  9. Good job Raelynn. This is a good post about parallel and perpendicular lines. Maybe next time changing the font and watch your capital letters.

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  10. Nice job Raelynn! I realy like how you added lots of pictures and your font size was just right. You had a few spelling mistakes but overall it was good. You could teach people alot about parralel and perpindicular lines with this scribe.

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  11. I'm still confused on the homework. Can anyone please explain what you have to do. I was not there when Mr.Isfeld was explaining. How do you answer those questions are we given anything to work with?

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  12. Good job, Raelynn. I like how you changed the colour of the important words. Next time, you should try to make the link pop up when you click on it.

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  13. Can someone please explain how to do the homework? I wasn't there when Mr. Isfeld was explaining it either.

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  14. Good jod Raelynn!I like how you highlighted important words. And net time you should put a capital at the beginning of a sentence but other then that,it was great!Good job!!

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  15. Nice post Raelynn!! I had quite a bit of trouble understanding your blog though. So next time I think you should explain things more. GREAT WORK!!!!

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  16. good post Realynn You forgot some capital letters though.

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  17. Great post Raelynn! I liked the way you changed the color of the title it really made it stand out. But the picture you used only had 6 boxes instead of 8. But overall, nice post!

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  18. good job raellyn, i liked the video it helped me more about parellel and perpendicular lines.and you got some misspelled words and you forgot about capitalizing some letters but nice job anyways

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  19. You did a good job raelynn everything we did in was there and i don't know if you added a link but if you didn't you should add one next time. Everything else was great but next time don't put too much color it kind of confusing. GOOD JOB!

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  20. Good job Raelynn I like how you put lots of pictures on what we did today, and how you changed some of the font colors! Great Job!

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  21. Good job Raelynn! I loved the pictures you posted , but the different colours kind of confused me. Everything else was good!

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  22. Nice job Raelynn! I like the video you posted. I like the way you made the name of the lines stand out.

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  24. Good job Raelynn!The video helped me alot.But you should double check your work because you need to make some letters capital and can any explain how to do our homework because I wasn't there when Mr.Isfeld was explaining what to do.

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  25. Good job, Raelynn! This really help me understood parallel lines and perpendicular.
    Next time try adding in a link to a different site.

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  26. I really like your post Raelynn. This helped me understand parallel lines and perpendicular. Next time check your work before posting it.

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  27. Great Job Raelynn. It's really easy to understand parallel and perpendicular lines because of your work so nice work. I like how you used different colours and sizes. It stands out and easy to read. I also like the pictures. Good Job anyway!

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  28. Great Job Raelynn!
    I like how you changed the coulor of the important words.I like your vidieo it was great. Also your pictures are great but are you supposed to have more than one picture. And you should also always do a spell check. Also something i just noticed were is your link. But overall great job!:)

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  29. Good Job Raelynn!
    I like how you explain parallel and perpendicular lines I really undersatnd. I love the pictures.I also like how you change the color for the important words.Anyway,Good Job.

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  30. Good job raelynn I like the font and colours

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  31. Simple and easy to follow. Nice....

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