Angle Stuff (picture vocab)

Front

What are adjacent angles?

Back

Adjacent angles are two angles that share a common side and a common vertex, and do not overlap.

Front

What is the sum of supplementary angles?

Back

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

Front

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

Back

The sum of complementary angles is 90°.

Front

What is the value of 'a' if it is an angle measuring 75°?

Back

The value of 'a' is 75°.

Front

If m∠1 = 30°, what is m∠3 if they are vertical angles?

Back

m∠3 = 30° because vertical angles are equal.

Front

What is the definition of vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal.

Front

How do you find the missing angle in a triangle?

Back

To find the missing angle in a triangle, subtract the sum of the known angles from 180°.

Front

What is the relationship between angles on a straight line?

Back

Angles on a straight line add up to 180°.

Front

What is the definition of complementary angles?

Back

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

Front

What is the formula for finding the measure of an exterior angle of a triangle?

Back

The measure of an exterior angle is equal to the sum of the measures of the two non-adjacent interior angles.