Angles Relationships Formed by a Transversal
Corresponding Angles
Corresponding angles are matching angles that are congruent.
Corresponding Angles
Corresponding angles congruent angles that are in matching corners.
Linear Pairs
Linear pairs are supplementary angles that are adjacent angles formed by intersecting lines.
Same-Side Exterior Angles
Same-side exterior angles are supplementary angles outside the parallel lines on the same-side of the transversal.
Same Side Interior Angles
Same-side interior angles are inside the parallel lines on the same-side of the transversal and are supplementary.
Same-Side Interior Angles
Same-side interior angles are supplementary angles inside the parallel lines on the same-side of the transversal.
Transversal
A line that crosses two or more (usually parallel) lines.
Alternate Exterior Angles
Alternate exterior angles are congruent angles outside the parallel lines on opposite sides of the transversal.
Alternate Exterior Angles
Alternate exterior angles are outside the parallel lines on opposite sides of the transversal and are congruent.
Alternate Interior Angles
Alternate interior angles are congruent angles inside the parallel lines on opposite sides of the transversal.
Alternate Interior Angles
Alternate interior angles are inside the parallel lines on opposite sides of the transversal and are congruent.
Supplementary Angles
Two angles whose measures add to 180⁰.
Complimentary Angles
Two angles whose measures add to 90°.
Vertical Pairs
Vertical angles are congruent angles opposite each other when two lines cross.