Angles Relationships

Front

What are supplementary angles?

Back

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

Front

What are complementary angles?

Back

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

Front

What are adjacent angles?

Back

Adjacent angles are two angles that share a common ray and a common vertex but do not overlap.

Front

What are vertical angles?

Back

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

Front

If angle 4 is 30 degrees, what is the measure of its complementary angle?

Back

The complementary angle is 60 degrees (90 - 30 = 60).

Front

If angle 5 is 45 degrees, what is the measure of its supplementary angle?

Back

The supplementary angle is 135 degrees (180 - 45 = 135).

Front

What is the relationship between angles 1 and 2 if they add up to 90 degrees?

Back

Angles 1 and 2 are complementary angles.

Front

What is the relationship between angles 3 and 4 if they add up to 180 degrees?

Back

Angles 3 and 4 are supplementary angles.

Front

If two angles are adjacent and one measures 70 degrees, what could be the measure of the other angle if they are supplementary?

Back

The other angle could measure 110 degrees (180 - 70 = 110).

Front

What type of angles are formed when two lines intersect?

Back

Vertical angles are formed when two lines intersect.