alternate interior angles - angles that are inside the parallel lines on opposite sides of the transversal, alternate exterior angles - angles that are on the outside of the parallel lines and on opposite sides of the transversal, vertical angles - angles that form an X, the opposite angles are congruent, corresponding - the angles that sit on the same side of the transversal and in the same position on the parallel lines, same side interior - angles that are on the same side of the transversal and inside the parallel lines, same side exterior - angles that are on the same side of the transversal and on the outside of the parallel lines, transversal - a line that cuts through parallel lines, parallel lines - lines that do not intersect, congruent - to have the same shape and size, supplementary angles - angles whose sum in 180 degrees, complimentary angles - angles whose sum is 90 degrees, linear pair - angles that form a line, adjacent angles - angles that are side by side, 180 - the degree measurement of a line,

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