1.1-1.4 Test Review

Front

What is an angle that is less than 90°?

Back

An acute angle.

Front

What do we call two angles that add up to 180°?

Back

Supplementary angles.

Front

What is the value of x in the equation if x + 10 = 29?

Back

x = 19.

Front

If V is the vertex, which angle is represented by B?

Back

Angle B has V as its vertex.

Front

What is the measure of m∠DEF if it is a straight angle?

Back

m∠DEF = 180°.

Front

Define a right angle.

Back

A right angle is exactly 90°.

Front

What are complementary angles?

Back

Two angles that add up to 90°.

Front

If angle A is 30°, what is the measure of its complement?

Back

The complement of angle A is 60°.

Front

What is the sum of the interior angles of a triangle?

Back

The sum is always 180°.

Front

What is an obtuse angle?

Back

An obtuse angle is greater than 90° but less than 180°.