Additive Angles

Front

What is an angle?

Back

An angle is formed by two rays (sides) that share a common endpoint (vertex).

Front

What is the sum of angles in a triangle?

Back

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

Front

What is an additive angle?

Back

Additive angles are angles that can be added together to find a total angle measure.

Front

If one angle measures 30 degrees, what is the measure of the other angle if the total is 90 degrees?

Back

60 degrees.

Front

What is the measure of a right angle?

Back

A right angle measures 90 degrees.

Front

What is the measure of a straight angle?

Back

A straight angle measures 180 degrees.

Front

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

Back

Subtract the sum of the known angles from 180 degrees.

Front

If ∠A = 50 degrees and ∠B = 30 degrees, what is ∠C in a triangle?

Back

∠C = 100 degrees.

Front

What is the formula to find the missing angle C if angles A and B are known?

Back

C = 180° - (A + B).

Front

What is the measure of a full rotation?

Back

A full rotation measures 360 degrees.