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Complementary means the sum of two more angles is exactly: 90 180 Congruent or equal 2 Supplementary means the sum of two more angles is exactly: 90 180 Congruent or equal 2 Vertical angles are opposite angles formed by intersecting lines. These angles are always: 90 180 Congruent or equal 2 The sum of all the angles in a triangle is always: 90 180 Congruent or equal 3 |