Angle/Transformation Vocab

Front

Two angles that sum to 90°

Back

Complementary

Front

Equal to or the same

Back

Congruent

Front

Angles that sum to 180°

Back

Supplementary

Front

Angle < 90°

Back

Acute

Front

Angle of 180 degrees

Back

Straight

Front

Angle of 90 degrees

Back

Right

Front

Angle > 90° and < 180°

Back

Obtuse

Front

Opposite and equal angles

Back

Vertical

Front

Angles on opposite sides of the transversal outside parallel lines

Back

Alternate Exterior

Front

Lines that will never intersect

Back

Parallel