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.

Tags

CCSS.4.G.A.1

Front

What are complementary angles?

Back

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

Tags

CCSS.7.G.B.5

Front

What are supplementary angles?

Back

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

Tags

CCSS.7.G.B.5

Front

What are vertical angles?

Back

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

Tags

CCSS.7.G.B.5

Front

What are adjacent angles?

Back

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

Tags

CCSS.7.G.B.5

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.

Tags

CCSS.8.G.A.5

Front

What is the equation for supplementary angles?

Back

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

Tags

CCSS.7.G.B.5

Front

What is the equation for complementary angles?

Back

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

Tags

CCSS.7.G.B.5

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).

Tags

CCSS.7.G.B.5