Angle Relationships and Equations

Front

What are complementary angles?

Back

Angles that add up to 90°.

Front

What are supplementary angles?

Back

Angles that add up to 180°.

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect.

Front

What are adjacent angles?

Back

Angles that share a common side and vertex.

Front

If one angle is 30°, what is its complementary angle?

Back

60°.

Front

If two angles are supplementary and one angle is 110°, what is the other angle?

Back

70°.

Front

What is the sum of angles in a triangle?

Back

180°.

Front

If two angles are equal and they are complementary, what is the measure of each angle?

Back

45°.

Front

Find the value of x if x + 70° = 90°.

Back

20°.

Front

Find the value of x if x + 50° = 180°.

Back

130°.