## Wednesday, November 18, 2009

### Bisecting Perpendicular Lines

Bisect-

Bi means two.
Sect means cut.
So if you put it together, bisect means to cut in two.

Perpendicular
Bisector-
A perpendicular bisector is a line that divides another line segment in half and is at right angles or 90 degrees.
Remember that equal line segments are marked with "hash" marks.

Ways to Make a Perpendicular Bisector:

- Use a right triangle.
- Use a ruler.
- Use a compass

1. Make an arc from point A that is greater than half way.
2. Make an equal sized arc from point B.
3. Connect the arc intersections with a straight line. That line is a perpendicular bisector.

Here is a video for all of you to enjoy and hopefully it will help you understand bisecting more.

** Today's Homework**
Draw a 12 centimeter line segment and label it PQ. Draw the perpendicular bisector of this segment using all three ways. Label the point where they intersect R.

Remember that there is going to be a test tomorrow on perpendicular, parallel and bisecting line segments. So everyone please study hard.(:

1. Sorry for all of the wierd mistakes. Especially the first part and the size of the words. For some reason it turned out that way. Again, I'm really sorry. )))))):

2. Good Job! You explained everything well and the picture is pretty good. I like the way how you used the color on the important words. Nice Job!

3. Nice job Melanie! You explained everything well, and its okay if you made mistakes, I think. Thanks for the homework!

4. Good job. I like how you changed the colour for the important words and how everything is easy to read. Next time you should have added how to use all three ways.

5. Nice job Melanie!I really liked how you changed the color of your fonts a lot. I enjoyed your picture and video and I think you explain well and covered pretty much everything we did in class. To me, there's nothing else you need to fix so keep up the good work :D

6. Great Job! very well explained. I like the way you used different colors and writing the homework.The font in the beginning was okay even though it was small it was spaced out and clear.The picture was good and the video was a a great touch.
Good Job!

7. Great job Melanie! I loved the way you did the fonts and stuff. I liked how you explained things nicely. This is enough info for me to remember, so I can study. Thanks Melanie! Nice job!

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9. Good job! You explained and put down everything very clearly. I liked the picture, it was very easy to understand, and the video very was good too. You should have put down how to bisect a line segment all 3 ways not just the "1". Either than that I think you did a great job! :P

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11. Wonderful job, Melanie! I really like your video and how you changed colors of importance. I also liked how you explained everything and your layout was nice. But next time you do the blog, you should try and put a link just to expand more on what we learned. Also, you should have wrote about everything we did in our class. I think that your post was very thought out and I think you did a wonderful job!

12. Great Job Melanie! I liked your use of font,colour,size and pictures. I liked the video you put, it showed a good way to draw a perpendicular bisector. You did such a good job, I think your scribe is one of the best. (: Everything was well explained and just like the notes we took in class. I think Meldrick and Suzie will have no problem understanding what they missed. Again, AWESOME JOB! (:

13. Great post, Melanie! I wasn't here today, and it sort of helped me to understand bisecting. I won't be there tomorrow and I'll catch up on Friday. I liked your video and your information. I also liked your different colors and fonts. Good job! (:

14. Good post Melanie. I liked how you changed the color for important words like divide and right angles. I also liked how you explained all three ways to bisect. I now know how to bisect better. Again, good post Melanie.

15. Good job Melanie. You explained everything well and the picture is pretty good.I liked how you change the inportant stuff a colour instead of black. So Good Job Melania and thanks for the reminder.

16. Awesome job Melanie! You helped me understand what you did today because I wasn't there. There is something of note. I don't know if this is my messed up computer or not, but part of your embedded Youtube video is cut off. Also, you should put a link next time, if you can find one. Maybe yourteacher.com? Well, I have nothing else to say, so... amusez vous bien!

17. Good job Melanie! It explained everything very good and it was clean and easy to read. The colors weren't too bright. On the homework you should of told us we had to answer those two questions Mr.Isfeld gave us to answer. Great job!

18. Good Job Melanie! You Explained what "Bi" and "Sect" meant. You didnt put the colours bright so you should of made the important stuff bigger! Anyways Excellent Job! Keep It up! (:

19. Good Job you explained what bi and sect meant good job

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21. Good Job Melanie!!!!!!!!!!!!!!!!!1

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23. Good Job with the blog Melanie!Nice picture and good job with playing with the colors

24. Great job Melanie! I like how you emphasized the key words and explained everything well. Keep up the good work!

25. Good Job! You Explained what "Bi" and "Sect" meant and I like how you highlight the important words in different colour it was easy to read.

26. Good job melanie!!!!I think you did a great job explianng what bisecting means at first I did'nt get it now I do. Good job melanie.

27. When we have an exam this will be very understandable ! good job !

28. when we have our ewxams this will be kinda easy and kinda hard but GREAT JOB !!!!!