Angle Addition and Angle Bisector

Front

What is the Angle Addition Postulate?

Back

The Angle Addition Postulate states that if point B is in the interior of angle AOC, then m∠AOB + m∠BOC = m∠AOC.

Front

Define an Angle Bisector.

Back

An Angle Bisector is a ray that divides an angle into two congruent angles.

Front

What is a Right Angle?

Back

A Right Angle is an angle that measures exactly 90 degrees.

Front

What is the sum of the angles in a triangle?

Back

The sum of the angles in a triangle is always 180 degrees.

Front

If two angles are supplementary, what is their relationship?

Back

Two angles are supplementary if the sum of their measures is 180 degrees.

Front

What does it mean for angles to be complementary?

Back

Two angles are complementary if the sum of their measures is 90 degrees.

Front

How do you find the measure of an unknown angle when given one angle in a right triangle?

Back

In a right triangle, the measure of the unknown angle can be found by subtracting the known angle from 90 degrees.

Front

What is the definition of an Acute Angle?

Back

An Acute Angle is an angle that measures less than 90 degrees.

Front

What is the definition of an Obtuse Angle?

Back

An Obtuse Angle is an angle that measures more than 90 degrees but less than 180 degrees.

Front

If angle A measures 45 degrees, what is the measure of its complement?

Back

The measure of the complement of angle A is 45 degrees (90 - 45 = 45).