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Vocabulary
Angles: An angle is a combination of two rays (half-lines) with a common endpoint. The latter is known as the vertex of the angle and the rays as the sides, sometimes as the legs and sometimes the arms of the angle. Complementary: two angles whose sum is 90 degrees Supplementary: : two angles or arcs whose sum is 180 degrees Degree a unit of measure for angles equal to an angle with its vertex at the center of a circle and its sides cutting off ¹/₃₆₀ of the circumference a fifteen degree angle 47 degrees Latitude |