ACARA AC9M8SP02, Properties of quadrilaterals

Year 8 · Space

Establish properties of quadrilaterals using congruent triangles and angle properties, and solve related problems with reasoning.

Below are free printable maths worksheets that support AC9M8SP02. Print them as PDFs, or generate a fresh one. Every maths answer key is computed in code, so it is never wrong.

Teaching guide

What students learn

Establish properties of quadrilaterals using congruent triangles and angle properties, and solve related problems with reasoning.

How to teach it

Sort and name 2D and 3D shapes by their properties (sides, angles, faces), then build up to perimeter (add the sides) and area (cover with unit squares).

Worked example

Rectangle 2 cm by 15 cm. Area = ___ sq cm

Answer: 30

Generated and checked in code, so it is correct.

Watch out for

Confusing perimeter and area, and judging a shape by its orientation rather than its properties.