Point - an exact location, Line - a straight path that point in opposite directions, Line segment - a part of a line with two endpoints, Ray - a part of a line with one endpoint and one arrow, Right angle - 90 degrees, Acute angle - less than 90 degrees, Obtuse angles - Greater than 90 degrees, Straight angle - 180 degrees (straight line), Protractor - tool to measure angles, Add/subtract angles - complimentary angles,

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