Lines that cross at one point.

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A straight path of points that goes on and on in both directions.

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Lines that never meet.

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Two intersecting lines that form RIGHT ANGLES

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An exact location in space.

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A figure formed by two rays that have the same endpoint.

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An angle that is less than a right angle.

 An angle that is less than 90 degrees.

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An angle that is greater than a right angle.

 An angle that is greater than 90 degrees.

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A part of a line that has two endpoints.

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An angle that forms a sqare corner.

 A 90 degree angle.[image]

A part of a line that has one endpoint and continues endlessly in one direction.

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An angle that forms a straight line.

 A 180 degree angle.

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The point where two rays meet to form an angle.

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A polygon with 4 sides.

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A closed plane figure made up of line segments.

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A polygon with 3 sides.

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Acute Triangle

A triangle with three acute angles.

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A triangle that has at least two equal sides.

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A triangle in which all the sides are the same length.

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A triangle in which there is one right angle.

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A triangle in which there is one obtuse angle.

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A quadrilateral in which opposite sides are parallel.

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A triangle in which no sides are the same length.

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A quadrilateral in which opposite sides are parallel and all sides are the same length.

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A quadrilateral with 4 right angles

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A quadrilateral with only one pair of parallel sides.

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A quadrilateral with 4 right angles and all sides are the same length.

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