1. Bisecting Line Segments and Angles Slideshow 40, Mathematics Mr Richard Sasaki Room 307

2. OBJECTIVES Learn how to bisect a line segment with a perpendicular line Learn how to bisect an angle

3. LINE SEGMENT BISECTION

4. With this radius, from P, we draw a mark above and below the diagram where each mark contains the half-way point on either side.

5. LINE SEGMENT BISECTION Keeping the compass at the same radius, we place the point at Q and again draw marks above and below the line segment that hopefully cross. We would then connect the crosses together to make a perpendicular line. R S Complete Questions 1 – 3!

6. BISECTING ANGLES (This can be one arc if preferred.) From each mark made, we then make marks between the line segments, where you think the bisection will go (in the middle). Finally, draw the ray (or whatever) and label it! S