Current Unit 3:
Geometry

parallel lines-lines that never intersect

perpendicular lines-lines that intersect at right angles

transversal-line that intersects parallel lines

vertical angles-congruent angles across from each other

supplementary angles-two angles with a sum of 180 degrees

adjacent angles-angles next to each other

corresponding angles-congruent angles with the same position but different line

alternate interior angles-congruent angles inside parallel lines on opposite sides of transversal

alternate exterior angles-congruent angles outside parallel lines on opposite sides of transversal

congruent-same

triangular proportionality-ratio of segments formed with parallel lines are cut by two transversals