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Angle Bisectors

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Author: Leif Park Jordan
Description:
1.

Introduce and define the angle bisector and demonstrate how to label one (ex. )

2.

Provide practice examples that demonstrate how to use angle bisectors to solve for unknown variables and angles (ex. is bisected by , = 3x +2 and  = 6x – 1, solve for x and find the m and m).

3.

Demonstrate how to construct the bisector of a given angle.

4.

Present how if a point is on the bisector of an angle, then it is equidistant from the two sides of the angle.

5.

Present how the angle bisectors of a triangle intersect at a point called the incenter.

This packet should help a learner seeking to understand the angle bisector.

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Tutorial

Introduction to Angle Bisectors

This video introduces the angle bisector.

Constructing an Angle Bisector

This video demonstrates how to bisect an angle using a compass and a straightedge.

Bisectors: Equidistant from Sides

This video presents how if a point is on the bisector of an angle, then it is equidistant from the two sides of the angle.

The Incenter

This video presents how the angle bisectors of a triangle intersect at a point called the incenter.

Practice Problems

This slideshow presents several practice problems that learners can use to check their understanding of the material presented in this packet.

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