Angles

maximum amount of degrees in an acute angle

89 degrees

how many degrees are in a right angle

90 degrees

what is the minimal amount of degrees in an obtuse angle

91 degrees

Supplementary Angles

Two angles whose measures add to 180⁰.

Complimentary Angles

Two angles whose measures add to 90°.

Corresponding Angles

Corresponding angles congruent angles that are in matching corners.

Transversal

A line that crosses two or more (usually parallel) lines.

Corresponding Angles

Corresponding angles are matching angles that are congruent.

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.

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.

Vertical Pairs

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