Bi means two.
Sect means cut.
So if you put it together, bisect means to cut in two.
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.(:
Please comment on my blog and please point out any mistakes I made.