ANGLE BISECTOR

Front

What is an angle bisector?

Back

An angle bisector is a line or ray that divides an angle into two equal parts.

Tags

CCSS.HSG.CO.C.9

Front

If angle ABC is bisected, what can be said about angles ABD and CBD?

Back

Angles ABD and CBD are congruent.

Front

What does the word BISECT mean?

Back

To cut something into two congruent pieces or in half.

Tags

CCSS.RF.5.3A

CCSS.RF.4.3A

CCSS.RF.3.3C

CCSS.RF.3.3B

CCSS.RF.3.3D

Front

If the measure of angle CBD is 50°, what is the measure of angle ABC when CBD is the angle bisector?

Back

50°.

Tags

CCSS.HSG.CO.C.9

Front

If angle ABC measures 34°, what is the measure of angle CBD when ABC is bisected?

Back

34°.

Front

If the measure of angle ABD is 74°, what is the measure of angle CBD when ABD is bisected?

Back

37°.

Front

If angle ABC is 15°, what is the measure of angle CBD when ABC is bisected?

Back

15°.

Front

What is the relationship between the angles formed by an angle bisector?

Back

The angles formed are equal.

Front

How do you find the measure of an angle when given its bisector?

Back

The measure of the angle is equal to the measure of the angle formed by the bisector.

Front

What is the formula for finding the measure of an angle when it is bisected?

Back

If angle A is bisected, then angle A = angle ABD + angle CBD, where angle ABD = angle CBD.