Monday, November 22, 2010

Perpendicular Bisectors

Bisect - bi and sect
bi - two
sect - cut
bisect - to cut in two

Perpendicular Bisectors

1. Draw a line segment
2. sharp end of compass on point A
3. make an arc slightly larger than half the length of the line segment
4. repeat the process from point B with the same size arc
5. with a ruler join the two arc intersections with a straight line
6. you now have a perpendicular bisector







Another way to make a perpendicular bisector is ;

1. draw a line segment
2. measure with a ruler
3. divide the measurement by two that is the half way point
4. use a right angle triangle to create a perpendicular line at the half way point




The third way is ;

In class today, we also did page 91 in our textbook, only the "show you know"
You had to include all 3 ways of perpendicular bisectors.
We also had to do page 92 in our textbooks. Numbers 1-3

For homework : pages 28-29 in our homework booklet.

Here is a quick video on how to draw a perpendicular bisector of a line :



Here is a link that can help you on perpendicular bisectors.

28 comments:

kassey814 said...

great job on the scribe post it explained everything on what we did in math keep up the good work when you are doing scribe posts

Kamille817 said...

Hey, Hannah! Good job on making your scribe-post. It's really well organize. You explained a lot on what we did today. Thanks

aaron873 said...

hey hannah great job you actually had everything we did you also made it very organized good job and thanks a lot

Nathan711 said...

good job, your video was very interesting and helpful and I liked how you showed all the bisection examples with a picture. I cant find anything wrong with it great job again

ronalen 8-14 said...

great job hannah you had alot of the things we did in class yesterday and it was great. I found another video for you

http://www.youtube.com/watch?v=RKk7EuLunQ8

jamodin 816 said...

hey hannah. Great job on your scribe post and you put everything that we did in math yesterday.

You could've put tis video too.

http://www.youtube.com/watch?v=4hVo0Gc3bX8

Cindy814 said...

Hannah,your post was great,I like it very much.What I like the most is the video,it teaches us how to draw a perpendicular bisector using a compass.I have a little suggestion,you could change the colors of the font,so things can stand out.

beverly814 said...

Hey there Hannah, you did a great job on your scribe post. You explained everything that we did in class today. I like how you put all three ways of making a perpendicular bisector. :)

abby873 said...

heeey . hannah (: good job with your scribe-post. I really liked how you explained everthing that we talked about yesterday & what we learned in math. make sure to add a link. && hope this link could help (: http://www.cut-the-knot.org/Curriculum/index.shtml
in other waays. goodjob (:

Anonymous said...

THANKS Hannah this scribe post really helped me and it says everythink we learned yesterday thanks again and mabe next time you canadd alink but great goob! :)

Jason 8-73 said...

Hey Hannah. Like your scribe.you could of put what a perpendicular bisect is if it helps.

Anonymous said...

I really like your scribe-post. You explained everything we did in class, the other day. I liked the part where you explained the ways on how to draw a perpendicular bisector. The video helped me on how to draw a perpendicular bisector. I think you should change the color of the font.

madeline816 said...

Great Job on your scribe post, but it would help us if you explained what a perpendicular bisector is. Although the explanation was missing, you still did a great job!

Diana814 said...

Hi Hannah you did a great job! You made it really clear of what we did in class the other day. I like the video and the pictures that you put up. But next time I would like to see bigger font or different colors of the font.

Sarah7-11 said...

Hi Hannah ! :D I really liked your scribe-post. It was really organized, and you explained everything we did in class today! Thank you Hannah. :D

serena 814 said...

Hi hannah, I really liked your scribe post on how to make a perpendicular bisector. I liked how you explained how to do a perpendicular bisector step by step. That gave me a better understanding. To make your scribe even better, here is another video that you should add on how to make a perpendicular bisector.

http://www.youtube.com/watch?v=zrr2Fv0yJbw&feature=player_embedded

irena814 said...

Hi Hannah, great scribe post! I liked how you explained the 3 different ways on how to make a perpendicular bisector. Also I really like how you explained it step by step because it gave me a better understanding of how to make a perpendicular bisector. Maybe next time you should add more colours and make the fonts a little larger. I know you already have a video, but here's another interesting one I'd found.
http://www.youtube.com/watch? v=lcBUOP5nk3U&feature=fvw

Danilyn8-73 said...

I really like how your scribe is organized, great job.

melody711 said...

Hey Hannah nice job you have everything we want for math I like your video very much :)

levi711 said...

nice post hannah it helped alot like the video

Lance873 said...

Great job hannah it will teach people how to make perpendicular bisectors

Sompong8-17 said...

Hey, Hannah! You did a wonderful job with this post. It was like repeating class all over again! You included everything that was needed and you were very descriptive. Good job! :)

Michael711 said...

Hi Hannah. This was very well done. The pictures were a very good example. You could have added some color to make it easier to read. Great job.

steven711 said...

good job hannah good job on the blog
but next time u should add a beter video like this :http://www.youtube.com/watch?v=qd9woiwZIwQ

randolph814 said...

Good Job Hannah and nice scribe post!!!!!! :-)

Joshuarego814 said...

wow good scribe-post. It helped me understand this a lot better.

karl817 said...

nice scribe post hannah it really help me to understand perpendicular bisector

Diana814 said...

Hi Hannah. I like it how you explained what we did in class really well! I also like the pictures that you put up. I also like the video you put up. It was very helpful. But next time I think that you should put the font a little bit bigger and in different colors.
Good Job!