Missing Angles in Triangles Review

Front

What is the measure of angle b if the other angles in the triangle are 90° and 54°?

Back

36°

Front

What is an "Acute" Angle?

Back

An angle that measures less than 90°.

Front

Find the measure of the indicated angle if the other angles are 90° and 54°.

Back

36°

Front

Find the measure of the indicated angle if the other angles are 90° and 70°.

Back

20°

Front

Find the measure of the missing angle in a triangle if the other angles are 90° and 45°.

Back

45°

Front

What is the sum of the angles in a triangle?

Back

180°.

Front

What is a "Right" Angle?

Back

An angle that measures exactly 90°.

Front

What is an "Obtuse" Angle?

Back

An angle that measures more than 90° but less than 180°.

Front

If one angle of a triangle is 60° and another is 80°, what is the measure of the third angle?

Back

40°.

Front

What is the relationship between the angles in a triangle?

Back

The sum of the interior angles is always 180°.