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Quadrilaterals

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Square 1) A square has 4 lines of symmetry

2) It has rotational symmetry of order 4 IE if rotated about the centre it will land back on itself four times EG 3) A square has 4 equal sides 4) Opposite sides are parallel 5) All corners are 900 6) Its diagonals are equal 7) Diagonals bisect at 900 A C B D 8) Area = the length x length

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Rectangle 1) A Rectangle has 2 lines of symmetry

2) It has rotational symmetry of order 2 IE if rotated about the centre it will land back on itself two times EG 3) A Rectangle has 2 pairs of equal sides 4) Opposite sides are parallel 4) All corners are 900 5) Its diagonals are equal in length 6) Diagonals bisect at the centre A C B D 7) Area = the length x breadth

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Rhombus 1) A Rhombus has 2 lines of symmetry

2) Rotational Symmetry order 2 3) A rhombus has 4 equal sides 4) Opposite sides are parallel Top and bottom corners same size and side angles are the same size 6) Its diagonals are equal 7) Diagonals bisect at 900

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Kite 1) A kite has 1 line of symmetry A 2) No rotational Symmetry

3) A kite has 2 pairs of equal sides D B 4) Opposite sides are parallel 6) Its diagonals are equal 7) Diagonals bisect at 900 C

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Parallelogram 1) A parallelogram has no lines of symmetry

2) It has rotational symmetry of order 2 IE if rotated about the centre it will land back on itself twice EG 3) A parallelogram is a quadrilateral which has 2 pairs of parallel edges. 4) Usually one pair of edges is longer than the other pair 5) All its interior angles add up to 3600 6) Usually No interior angle (corner) is 90 degrees 7) Angle ABD = Angle ACD and Angle CDB = Angle CAB 8) Its diagonals bisect each other at the centre of rotation EG 9) Area = length x perpendicular height A B D C A B D C

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O Trapezium 1) It usually has no line of symmetry

2) It has no rotational symmetry. IE it will only land back on itself when it has turned around 3600. 3) A trapezium is a quadrilateral with only one pair of parallel edges. 4) It has no angle the same 5) Length CO will equal DO and AB will equal BO 6) It has diagonals but they do not bisect each other at the centre of the shape. A D C B O

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