Math 4.1

These are the angles formed by the transversal and the parallel lines in the interior of the parallel lines.

Interior Angles

These are the angles formed by the transversal and the parallel lines in the exterior of the parallel lines.

Exterior Angles

It is a pair of adjacent angles that form a straight line when combined.

Linear Pair

These are a pair of non-adjacent angles formed by the intersection of two straight lines.

Vertical Angles

This is a pair of interior and exterior angles of the same side of the transversal.

Corresponding Angles

This is a pair of non-adjacent interior angles on opposite sides of a transversal.

Alternate Interior Angles

This is a pair of non-adjacent exterior angles on opposite sides of a transversal.

Alternate Exterior Angles

This is a pair of interior angles on the same side of a transversal.

Same-side Interior Angles

This is a pair of exterior angles on the same side of a transversal.

Same-side Exterior Angles

If two lines on the same plane intersect and from right angles, then they are what?

Perpendicular Lines

If two or more lines on the same plane do not intersect, then they are what?

Parallel Lines

If a line intersects two lines on a plane at different points, then it is a what?

Transversal