Angle - formed by two rays that share an endpoint., Vertex - the shared endpoint., right angle - an angle that forms a square corner., polygon - a closed plane figure with straight sides that are line segments., parallelogram - a quadrilateral with two pairs of parallel sides and two pairs of sides of equal length, quadrilateral - a polygon with four sides and four angles., rectangle - a quadrilateral with two pairs of parallel sides, two pairs of sides of equal length and four right angles, rhombus - a quadrilateral with two pairs of parallel sides and four sides of equal length, square - a quadrilateral with 2 pairs of parallel sides, four sides of equal length, and four right angles, trapezoid - a quadrilateral with exactly one pair of parallel sides., parallel lines - lines in the same plane that never cross and are always the same distance apart.,

3rd Grade:Geometry Vocabulary /Classify Quadrilaterals

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