Angle Relationships Flashcardizz

Front

What is an adjacent angle?

Back

An angle that is next to another angle and shares a common side.

Front

What does it mean for angles to be supplementary?

Back

Two angles are supplementary if their measures add up to 180 degrees.

Front

What are vertical angles?

Back

Vertical angles are the pairs of opposite angles formed by the intersection of two lines, and they are congruent (equal in measure).

Front

What is the measure of angles that are complementary?

Back

Two angles are complementary if their measures add up to 90 degrees.

Front

What is an example of adjacent angles?

Back

∠1 and ∠2 are adjacent angles if they share a common side.

Front

If angle 5 is 70 degrees, what is the measure of its supplementary angle?

Back

110 degrees, because 70 + 110 = 180.

Front

What is the relationship between vertical angles?

Back

Vertical angles are always congruent (equal in measure).

Front

What is the sum of the measures of two supplementary angles?

Back

180 degrees.

Front

What is the term for angles that add up to 90 degrees?

Back

Complementary angles.

Front

If angle 2 is 40 degrees, what is the measure of its vertical angle?

Back

40 degrees, because vertical angles are congruent.