vertex, the endpoint where two rays meet and form an angle, acute angle, an angle that is narrower than a right angle (<90 degrees), right angle, an angle that makes a square corner (=90 degrees), obtuse angle, an angle that is wider than a right angle (>90 degrees), point, a specific place shown with a dot, line, a set of points that goes on forever in both directions, line segment, a part of a line that has two endpoints, intersecting lines, lines that cross, parallel lines, lines that never cross, perpendicular lines, lines that make right angles when they cross, ray, a part of a line with one endpoint and continues on forever in one direction

Lines and Angles

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