Site US and Canada

Hanging with the Incenter

Published on 11/30/2012

Activity Overview

In this activity, students will explore the perpendicular bisector theorem and discover that if a point is on the perpendicular bisector of a segment, then the point is equidistant from the endpoints.

Key Steps

  • Image

    Students will be exploring the distance from a point on the angle bisector to the segment. They will discover that if a point is on the angle bisector of an angle, then it is equidistant from the two segments of the angle.

  • Image

    Students are to create an acute triangle and find the angle bisector of all three angles of the triangle. They will also find the distance from the incenter to the three sides of the triangle.

  • Image

    Problem 3 is an extension of the activity. Students will use the graphing calculator and the angle bisectors to find the coordinates of fence posts on a plot of land.