geometry · Year 2 · AC9M2SP01
Naming quadrilaterals
A quadrilateral is any shape with four straight sides, but the family has special members. A square has four equal sides and four right angles. A rectangle has four right angles with opposite sides equal. A rhombus has four equal sides but no right angles. A parallelogram has two pairs of parallel sides. A trapezium has exactly one pair of parallel sides, and a kite has two pairs of equal sides next to each other. To name a shape, check the sides and the angles — not how it is turned. Turning a shape never changes its name.
Sample questions
Name the quadrilateral that has four equal sides but no right angles.
- This shape has 4 sides, so it is a quadrilateral.
- A quadrilateral with four equal sides but no right angles is a rhombus.
Answer: rhombus
Name the quadrilateral that has four right angles and opposite sides equal, but it is longer than it is wide.
- This shape has 4 sides, so it is a quadrilateral.
- A quadrilateral with four right angles and opposite sides equal, but it is longer than it is wide is a rectangle.
Answer: rectangle
Name the quadrilateral that has four equal sides but no right angles.
- This shape has 4 sides, so it is a quadrilateral.
- A quadrilateral with four equal sides but no right angles is a rhombus.
Answer: rhombus