Acute Angle - Angle measure less than 90 degrees, Complementary Angle - Sum of two angles measure 90 degrees, Right Angle - Angle measure 90 degrees exactly, Supplementary Angle - Sum of two angles measure 180 degrees, Vertical Angle - The opposite angles formed from intersecting lines, Adjacent Angle - Angles that share a common vertex and common side, but don't overlap, Vertex - The point where lines or curves meet, Degree measure of a circle - 360 degrees, Obtuse Angle - Angle measure more than 90 degrees but less than 180, Degree measure of a triangle - 180 degrees,

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