Angle Relationships/Triangles Flashcard Review

Front

What are supplementary angles?

Back

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

Front

If m∠M = 67°, what is m∠O if ∠M and ∠O are supplementary?

Back

m∠O = 113°

Front

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

Back

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

Front

What does it mean for two triangles to be similar?

Back

Two triangles are similar if their corresponding angles are equal and their corresponding sides are in proportion.

Front

If two angles are complementary, what is the sum of their measures?

Back

The sum of the measures of complementary angles is 90 degrees.

Front

Find the measure of an angle if it is 40° less than its complement. What is the angle?

Back

The angle is 20°.

Front

What is the measure of an angle that is 30° more than its supplement?

Back

The angle is 105°.

Front

If two angles are vertical angles, what can be said about their measures?

Back

Vertical angles are always equal in measure.

Front

What is the relationship between the angles in a right triangle?

Back

In a right triangle, one angle measures 90°, and the sum of the other two angles is 90°.

Front

If triangle ABC is similar to triangle DEF, what can be said about their corresponding sides?

Back

The corresponding sides of similar triangles are in proportion.