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Math 7 Geometry Intro Topics #2 Name ______________________________ Review Problems: Complementary and Supplementary Angles 1) 2) A. Vertical and Adjacent Angles Angles that are across from each other, or vertical angles, are congruent . (Same measure different location). Angles that share a common vertex or side are called adjacent angles. If they form a straight line, they add up to 180°. We can set the two parts equal to each other if they are vertical or add them together to get 180° if they are adjacent and solve for x to find the missing angles. Vertical Examples: Adjacent Examples: B. Sides In a Triangle In a triangle, the sum of any two sides must be greater than the third side. Examples: Can any of these sets of sides form a triangle? Homework Questions: Determine whether the relationship is adjacent or vertical and then find the value of x in each question. Show all work. (1) (2) (3) (4) Fill in the chart to see which of the following sets of lengths could make a triangle: