Monday, November 22, 2010

Nov. 22 Notes Perpendicular Bisector

Bisect
Bi - two
Sect- cut

If you bisect a line segment you will create a perpendicular bisector

There are three (3) ways to construct a perpendicular bisector. Here are the following ways:

1st way: Using a compass

1. Draw a line segment





2.Sharp end of compass or point A









3.Make an are slightly larger than half the length of the line segment.

4. repeat the process from point B w/ the same sized

5. With a ruler join the two arc intersection with a straight line .

Here's a video and a picture of a finished perpendicular bisector:



2nd way: Using a right triangle

1. Draw a line segment

2. measure it with a ruler

3. divide the measurement by the half way point

4. use a right triangle to create a perpendicular line at the half way point.

This is how it works:








3rd way: Folding paper

1. line segment AB

2. fold the paper so point A falls right on top of point B

3. to crease is a perpendicular bisector

17 comments:

Mary816 said...

I like how you showd the steps, how you put picture, and a video! Next time try showing how you do the third way. Good job!

Mary816 said...
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Mary816 said...
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oudorn817 said...

I liked how you put pictures and a video! You might want to try explaining your second picture, but good job.

Aicelle817 said...

Good job ! i liked how you had steps, pictures and video !

hendrix817 said...

I liked how you explained the things that you did.good job

Jackie8-16 said...

GOOD JOB CARLO! i liked how you gave a video and pictures to help explain the different ways to bisect line segments. I think you could add a link

Kimg817 said...

Good job Carlo! you did almost everything we need to understand perpendicular bisector, next time you might want to add a link

Janessa814 said...

Good job Cralo R ! I like the video and how you explaned things good job but next time you should put a link !

Janessa814 said...

Sorry ! Carlo !

joshL814 said...

I agree with the other students. You should add a link. Try this:

http://www.innovationslearning.co.uk/subjects/maths/activities/year6/angles/game.asp

I like how you explained the different ways of making a perpendicular bisector very clear. There's just one thing you forgot to do. You forgot to put the third way. That's okay. Good Job!

daphne906 said...

Nice Job! I like your explination...it really made sense!
next time you should add a link! Here's a link you might want to add

http://www.mathopenref.com/bisectorperpendicular.html

CarloS8-16 said...

goodjob! Carlo r I like that you explained how to do perpendicular bisector by doing it step by step and putting picture about how to do perpendicular line. Your video really help me a lot.

norien873 said...

Good job! I liked the way you had a video and pictures, I also liked your explanations. Next time you might want to put some color on the important words.

Tinille8-73 said...

Good Job Carlo!I like your explanation it helps alot! But like others said you might want to put a link next time. Anyways, Good Job. :)

Isabel873 said...

Good Job!!!! I like how you explained the steps and your image is nice and like Tinille said you might want to put a link next time but over all you did a great job!!!! Keep Up The Good Work. :)

Anonymous said...

good JOb Carlo i like how you put lots of information it really make sense you explained the steps good job.