Angle Pair Relationships Flashcard

Front

What are Vertical Angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal.

Front

What are Adjacent Angles?

Back

Adjacent angles are two angles that share a common side and a common vertex but do not overlap.

Front

What are Linear Pairs?

Back

Linear pairs are two adjacent angles that form a straight line. Their measures add up to 180°.

Front

What are Complementary Angles?

Back

Complementary angles are two angles whose measures add up to 90°.

Front

What are Supplementary Angles?

Back

Supplementary angles are two angles whose measures add up to 180°.

Front

If two angles are vertical angles, what can be said about their measures?

Back

Vertical angles are always equal in measure.

Front

If angle A and angle B are a linear pair, what is the relationship between their measures?

Back

The measures of angle A and angle B add up to 180°.

Front

Find x if angle A = 90° and angle B is a complementary angle to angle A.

Back

x = 90° - angle A = 0° (angle B is also 0°).

Front

Find x if angle A = 37° and angle B is a supplementary angle to angle A.

Back

x = 180° - angle A = 143°.

Front

What is the measure of each angle if two angles are complementary and one angle measures 30°?

Back

The other angle measures 60° (90° - 30° = 60°).