Wednesday, 28 November 2012


 Quadrilateral means “four sides”. Therefore, any four sided shape is a quadrilateral, but the sides have to be straight, and it has to be 2 dimensional.
  • Square: Four equal sides. Four equal angles, always 90°.
  • Rectangle: Opposite sides are parallel and of equal length. Four equal angles, always 90°.
  • Rhombus: Four equal sides. Opposite angles are parallel.
  • Trapezium/trapezoid: Has one pairof parallel sides.

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