Angles Vocab

Front

Corresponding angles:

Back

Two angles in the same position when parallel lines are cut by a transversal.

Front

Interior angles

Back

Angles inside a shape.

Front

Transversal:

Back

A line that intersects two or more lines.

Front

Alternate interior angles are a pair of angles on the inner side of two lines cut by a transversal, but on opposite sides of the transversal.

Back

A pair of angles on the inner side of two lines cut by a transversal, but on opposite sides of the transversal.

Front

Alternate exterior angles:

Back

A pair of angles on the outer side of two lines cut by a transversal, on opposite sides of the transversal.

Front

Vertical angles are the angles opposite each other when two lines cross.

Back

Vertical angles.

Front

Supplementary angles:

Back

Sum measures 180 degrees.

Front

Exterior angle definition

Back

The angle formed by extending a line along one side of a triangle, outside the shape.

Front

Complementary angles are two angles whose sum is 90 degrees.

Back

90 degrees

Front

∠1 and ∠2 are ___

Back

Alternate Interior Angles