Mathematics Geometryusually ages 9–10

Degrees and turns

Know that angles are measured in degrees, where one degree is 1/360 of a full turn; understand that an angle turning through n one-degree angles has a measure of n degrees

How to tell they’ve got it

Tick these off as you see them — no test required.

Explain that a full turn is 360° and a right angle is 90°
Describe what 'one degree' means in terms of a fraction of a circle
State that an angle of 45° has turned through 45 one-degree angles

🖨 Print this page to keep the checklist — it prints beautifully.

Try this together

If your child knows a full circle is 360 degrees, can they tell you how many degrees a quarter turn is — and explain roughly what one single degree looks like?

Where this sits on the map

Stuck here? Check the skills it builds on first. Confident? Here’s what it unlocks.

Builds on

What Is an Angle?ages 9–10Degree measurement system requires understanding what an angle is

Degrees and turnsthis skill · ages 9–10

Unlocks

Angle Sum Rulesages 9–10Angle facts (at a point = 360°) require degree system knowledge

Estimating Anglesages 9–10Estimating/comparing angles requires understanding the degree system

Measuring anglesages 9–10Using a protractor requires understanding degree measurement

solid = must come firstdashed = helps

Curriculum alignment

Candidate matches to official curriculum codes — machine-suggested, unreviewed (v0.1).

Show candidate curriculum codes · 3 ACARA · 2 NSW · 3 VIC

Australian Curriculum v9 candidate

AC9M3M05medium confidenceYear 3 · Measurement

identify angles as measures of turn and compare angles with right angles in everyday situations

AC9M6M04medium confidenceYear 6 · Measurement

identify the relationships between angles on a straight line, angles at a point and vertically opposite angles; use these to determine unknown angles, communicating reasoning

AC9M5M04medium confidenceYear 5 · Measurement

estimate, construct and measure angles in degrees, using appropriate tools including a protractor, and relate these measures to angle names

NSW syllabus codes & stages only

MA2-GM-03medium confidenceMathematics K-10 · Stage 2

MA3-GM-03medium confidenceMathematics K-10 · Stage 3

Victorian Curriculum 2.0 codes & levels only

VC2M3M05medium confidenceMathematics · Level 3 · Measurement strand

VC2M6M04low confidenceMathematics · Level 6 · Measurement strand

VC2M4M04low confidenceMathematics · Level 4 · Measurement strand

These are candidate alignments generated by semantic matching — machine-suggested and unreviewed (v0.1), not official or verified mappings. For official curriculum content see australiancurriculum.edu.au, curriculum.nsw.edu.au and f10.vcaa.vic.edu.au. Don’t rely on them for registration or compliance purposes.

Nearby on the map

3-D shapes (age 9+)ages 9–10 Angle Sum Rulesages 9–10 Classifying shapes by line propertiesages 9–10 Estimating Anglesages 9–10

All Geometry skills →