complementary, Two angles whose sum is 90 degrees, supplementary, Two angles whose sum is 180 degrees, linear pair, Adjacent angles that form a straight angle, these angles are supplementary, vertical angles, two nonadjacent angles formed by intersecting lines, they are congruent, perpendicular lines, two lines that intersect to form right angles, parallel lines, lines that never intersect, angles around a point, angles sum to 360

Angle Relationships

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