Angles Vocab. Review

Front

Measure of an acute angle:

Back

Greater than 0° and less than 90°.

Front

Measure of a right angle:

Back

90 degrees

Front

Measure of an obtuse angle:

Back

Greater than 90° and less than 180°.

Front

Measure of a straight angle:

Back

180 degrees

Front

Complementary Angles are two angles that add up to 90 degrees.

Back

Two angles that add up to 90 degrees.

Front

Supplementary Angles are two angles that add up to 180°.

Back

Two angles that add up to 180 degrees.

Front

Vertical Angles are...

Back

Pairs of opposite angles formed by intersecting lines

Front

Straight Angles are...

Back

Angles that form a straight line and add up to 180°.

Front

Alternate Interior Angles are...

Back

Angles inside parallel lines on opposite sides of the transversal.

Front

Alternate Exterior Angles are...

Back

Angles outside parallel lines on opposite sides of the transversal.