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ACARA AC9M4M04, Name and compare angles

Year 4 · Measurement

Estimate and compare angles using names such as acute, obtuse, straight, reflex and revolution, relating each to a right angle.

Below are free printable maths worksheets that support AC9M4M04. 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

Estimate and compare angles using names such as acute, obtuse, straight, reflex and revolution, relating each to a right angle.

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
Find the area.
Answer: 187
Why: 11 × 17 = 187

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.

Geometry worksheets

All geometry worksheets →

Sets A-F are the same worksheet with different questions - print any (or all) for fresh practice.

Make a worksheet for AC9M4M04
More Year 4 Measurement codes: AC9M4M01 · AC9M4M02 · AC9M4M03
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Australian Curriculum content descriptions (c) ACARA, used under CC BY 4.0. Descriptions are paraphrased. See australiancurriculum.edu.au.