Additional Example:Construct a circle passing through these three points:
Angle Bisectors in Triangles
Pacing:This lesson should take one class period
Goal: Students will learn how to inscribe circles within triangles using the concept of angle bisectors. Students
should be familiar with angle bisectors, as there were presented in chapter one.
Summary: To inscribe circles within triangles, the center of the circle is the intersection of angle bisectors. To
circumscribe circles about triangles, the center of the circle is the intersection of perpendicular bisectors.
To construct the angle bisectors, repeat theIn-class Activityfound inUsing Congruent Triangleslesson.
Additional Example:Locate the circle inscribed within the following triangle.
Medians in Triangles
Pacing:This lesson should take one class period
Chapter 1. Geometry TE - Teaching Tips