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Lesson Summary. Supplementary angles are any two angles whose measures sum to 180 degrees. Supplementary angle pairs will either be two right angles (both 90 degrees) or be one acute angle and one obtuse angle. If two angles are both supplementary to the same angle, then the two angles are of equal measure.
Lesson 2-E ~ Vertical Angles And Adjacent Angles 19. VERTICAL ANGLES AND ADJACENT ANGLES. LESSON 2-E. C. omplementary and supplementary angles are types of special angles. Another pair of special angles. are vertical angles. Vertical angles are formed by two intersecting lines. They have a common vertex but. are not adjacent.