Flashcard Angle Pairs

Front

What are angle pairs?

Back

Angle pairs are two angles that are considered together. They can have specific relationships such as complementary, supplementary, vertical, or adjacent.

Front

Define complementary angles.

Back

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

Front

Define supplementary angles.

Back

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

Front

What are vertical angles?

Back

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

Front

What are adjacent angles?

Back

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

Front

If angle A is 81°, what is the measure of its complementary angle?

Back

9° (because 90° - 81° = 9°).

Front

If angle B is 34°, what is the measure of its supplementary angle?

Back

146° (because 180° - 34° = 146°).

Front

Solve for x: 2x + 10 = 70.

Back

x = 30.

Front

What is the relationship between two angles that add up to 180°?

Back

They are supplementary angles.

Front

What is the relationship between two angles that are equal?

Back

They are vertical angles.