point - a single location in space, line segment, line - a row of points that go on forever in both directions, perpendicular lines, parallel lines, ray - starts at one point and goes on forever in one direction, angle - formed where 2 rays meet at a common point, right angle - measures 90, box corner, acute angle - measures less than 90, obtuse angle - measures greater than 90, less than 90 angle, obtuse angle picture, measures 180 - straight line, measures 360 - circle, right angle picture - measures 90,

Angles, lines

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