right - An angle that is exactly 90 degrees, straight - An angle that is exactly 180 degrees, acute - An angle that is more than 0 degrees but less than 90 degrees, obtuse - An angle that is more than 90 degrees but less than 180 degrees, complementary angles - 2 angles that have a sum of 90 degrees, supplementary angles - 2 angles that have a sum of 180 degrees, angle - a figure which is formed by two rays or lines that shares a common endpoint, vertex - common endpoint that 2 rays share, ray - a part of the line having one fixed point and the other point does not have an end, vertical angles - congruent angles that lie opposite to each other when 2 lines intersect,

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