Lines and Angles Vocab

Front

Parallel lines:

Back

Lines in the same plane that do not intersect.

Tags

CCSS.HSG.CO.A.1

Front

Corresponding angles?

Back

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

Tags

CCSS.8.G.A.5

Front

Interior angles

Back

Angles inside a shape.

Tags

CCSS.8.G.A.5

Front

Perpendicular lines:

Back

Intersect at 90 degrees.

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

Front

Intersecting lines

Back

Two lines that cross at exactly one point.

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

Front

Transversal definition:

Back

A line that intersects two or more lines.

Tags

CCSS.8.G.A.5

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.

Tags

CCSS.8.G.A.5

Front

Alternate exterior angles:

Back

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

Tags

CCSS.8.G.A.5

Front

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

Back

Vertical angles

Tags

CCSS.7.G.B.5

Front

Supplementary angles?

Back

Sum measures 180°.

Tags

CCSS.7.G.B.5