Has a measurement that is less than 90 degrees. , ACUTE ANGLE, STRAIGHT ANGLE, Has a measurement that is exactly 90 degrees. , OBTUSE ANGLE, RIGHT ANGLE, Has a measurement that is greater than 90 but less than 180 degrees. , OBTUSE ANGLE, ACUTE ANGLE, Has a measurement that is exactly 180 degrees. , STRAIGHT ANGLE, RIGHT ANGLE, A point is a dot, an exact location. , , , A line goes on a straight path that goes on forever in both directions. , , , A Ray is a line with one endpoint. , , , , Line Segment, Ray , , Intersecting Lines , Parallel Lines , , Perpendicular Lines , Parallel Lines , Intersecting lines cross at one point and form angles that are NOT right angles. , , .

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