Shape
Copyright David & Cynthia Thomas, 2009
Sides, Angles, Interior Lines & Points--Directed Activity:
Angle bisectors
Focus |
Bisect a given angle |
Technologies |
· The Geometers Sketchpad · Paper and pencil |
Background |
An angle bisector is a line, ray, or segment containing the vertex of the angle that divides the interior of the angle into two congruent angles. For example, in Figure 2.14, segment BD divides ÐABC such that ÐCBD @ ÐABD.
Figure 2.14: Angle Bisector
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Tasks |
Bisect a given angle: · Using both pencil-and-paper and · The Geometers Sketchpad. |