Angles, Angle Relationships, Triangles

Front

What is a right angle?

Back

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

Front

What is the sum of the angles in a triangle?

Back

The sum of the angles in a triangle is always 180 degrees.

Front

Define supplementary angles.

Back

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

Front

What is the value of x in a triangle if one angle is 90 degrees and another is 37 degrees?

Back

x = 53 degrees.

Front

What type of triangle has one right angle?

Back

A right triangle.

Front

What is an acute angle?

Back

An acute angle is an angle that measures less than 90 degrees.

Front

What is an obtuse angle?

Back

An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees.

Front

How do you find the measure of an unknown angle in a triangle?

Back

Subtract the sum of the known angles from 180 degrees.

Front

What are complementary angles?

Back

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

Front

If two angles are supplementary and one measures 31 degrees, what is the measure of the other angle?

Back

The other angle measures 149 degrees.