Symmetry and 2D shapesSymmetry in quadrilaterals

A quadrilateral is a 2D shape with four sides.

Different types of quadrilateral have different numbers of lines of symmetry.

Square

A square has:

• four equal sides
• four equal angles of 90°
• opposite sides are parallel
• four lines of symmetry

Rectangle

A rectangle has:

• two pairs of equal sides
• four equal angles of 90°
• opposite sides are parallel.
• two lines of symmetry

Parallelogram

A parallelogram has:

• two pairs of equal sides
• opposite angles are equal
• opposite sides are parallel
• no lines of symmetry

Rhombus

A rhombus has:

• four equal sides
• opposite angles are equal
• opposite sides are parallel
• two lines of symmetry

Kite

A kite has:

• two pairs of equal sides
• one pair of equal angles
• one line of symmetry

Trapezium

A trapezium has:

• A trapezium has one pair of parallel sides.
• Some trapeziums have one line of symmetry. They are called isosceles trapeziums as they have two equal sides like isosceles triangles.