rectangle - A quadrilateral with 4 right angles and opposite sides equal length., square - A quadrilateral with 4 right angles and all sides equal length., parallelogram - A quadrilateral with 2 pairs of parallel lines., trapezoid - A quadrilateral with one pair of parallel lines, right angle - A square angle, parallel lines - Lines that never intersect or cross., rhombus - A quadrilateral with all sides equal,

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