Prerequisite Skills: Name rays (Assignment 2.1). Name angles (Assignment 2.4). Identify congruent angles (Assignment 2.8). Solve algebraic equations with one variable. Evaluate algebraic expressions.

Definition: The bisector of an angle is a ray in the interior of the angle with its endpoint at the vertex of the angle that divides the angle into two congruent adjacent angles.

Postulate: An angle has exactly one bisector.

Geometry for School and Home

Assignment 2.15

The Bisector of an Angle

Objectives

Identify and name angle bisectors.

Calculate measures of angles determined by angle bisectors.

Write and solve equations to find measures of angles determined by angle bisectors.

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​Assignment 2.15​