Angles and Equations

Front

What are angles?

Back

Angles are formed by two rays (sides) that share a common endpoint (vertex). They are measured in degrees.

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Front

What are complementary angles?

Back

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

Front

What are supplementary angles?

Back

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

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

How do you solve for x in the equation 180 = 2x + 70?

Back

To solve for x, subtract 70 from both sides to get 110 = 2x, then divide by 2 to find x = 55.

Front

What is the equation for supplementary angles?

Back

The equation for supplementary angles is A + B = 180 degrees.

Front

What is the equation for complementary angles?

Back

The equation for complementary angles is A + B = 90 degrees.

Front

If angle A is 30 degrees, what is the measure of its complementary angle?

Back

The measure of the complementary angle is 60 degrees (90 - 30 = 60).