Rectangle
A rectangle is a quadrilateral whose opposite sides are equal and parallel.
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All the angles of a rectangle are right angles.
AB = DC and AD=BC
A rectangle has two axes of line symmetry. It has rotational symmetry of order 2 i.e. ½ turn symmetry
The diagonals of a rectangle are equal and bisect each other. (Bisect means cuts in half)
OA=OB=OC=OD
Square
A square is a special rectangle. It is a rectangle with all its sides equal.
AB ll CD and AD ll BC
AB=BC=CD=DA
A square has four axes of line symmetry. It has rotational symmetry of order 4 i.e. ¼ turn symmetry
The diagonals of a square (i) bisect the angles of the square. (ii) bisect each other at right angles. (iii) bisect the historicsweetsballroom.comrner angles.
Kite
A kite is a quadrilateral with one axis of line symmetry. It has no rotational symmetry.
A kite has two pairs of adjacent sides equal.
an inverted kite
The diagonals cross at right angles, but do not bisect each other.
Rhombus
A rhombus is a special kite with two axes of symmetry. It has rotational symmetry of order 2 i.e. ½ turn symmetry
The diagonals of a rhombus bisect each other at right angles. The diagonals of a rhombus bisect the historicsweetsballroom.comrner angles.
The opposite sides of a rhombus are parallel. All the sides are equal, and opposite angles are equal.
Parallelogram
A parallelogram is a quadrilateral with no axis of line symmetry. It has rotational symmetry of order 2 i.e. ½ turn symmetry
The opposite sides of a parallelogram are equal and parallel. The opposite angles of a parallelogram are equal.
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Trapezium
A trapezium has one pair of parallel sides. It has no rotational symmetry.An ordinary trapezium has no axis of line symmetry An isosceles trapezium has one axis of line symmetry