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Math 8 Notes 6.1 Classify angles. Name ________________________ Date: _____________ Block: ____ 1. Two angles are ______________ if they have: a common side, a common vertex (corner point), and don't overlap. These ARE Adjacent Angles they share a vertex and a side NOT Adjacent Angles NOT Adjacent Angles they only share a vertex, not a side they only share a side, not a vertex 2. Two Angles are ________________________ if 3. Two Angles are ________________________ if they add up to 90 degrees (a Right Angle). they add up to 180 degrees "C" of Complementary stands for "Corner" (a Right Angle), and "S" of Supplementary stands for "Straight" (180 degrees is a straight line) 4. _______________ angles are the angles opposite each other when two lines cross Vertical angles are equal: "Vertical" in this case means they share the same Vertex, not the usual meaning of up-down. Examples: Find the unknown value in the figure