Learning Map
MathematicsGeometryusually ages 9–10

Measuring angles (age 9+)

Recognise angle measure as additive; find unknown angles by adding or subtracting on a diagram using equations with a symbol for the unknown

How to tell they’ve got it

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

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Try this together

If two angles sit next to each other on a straight line and one is 65°, can your child work out the other angle — knowing that angles on a straight line always add up to 180°?

Where this sits on the map

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

Builds on
Types of angles (age 8+)ages 8–12Finding unknown angles using equations requires reading angle diagrams and interpreting arc marks and notation
Angle Sum Rulesages 9–10Must know angle facts (360°, 180°) to solve unknown angle problems
Measuring anglesages 9–10Must measure angles before solving unknown angle problems
Measuring angles (age 9+)this skill · ages 9–10
Unlocks
Understanding angles (age 10+)ages 10–11Finding missing angles extends Y5 additive angle reasoning
Understanding fractions (age 9+)ages 9–10Unknown angle problems exercise constructing chains of reasoning

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

AC9M6M04high 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

AC9M5M04high confidenceYear 5 · Measurement

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

AC9M4M04high confidenceYear 4 · Measurement

estimate and compare angles using angle names including acute, obtuse, straight angle, reflex and revolution, and recognise their relationship to a right angle

NSW syllabus codes & stages only

MA3-GM-03high confidenceMathematics K-10 · Stage 3
MA2-GM-03high confidenceMathematics K-10 · Stage 2

Victorian Curriculum 2.0 codes & levels only

VC2M6M04high confidenceMathematics · Level 6 · Measurement strand
VC2M5M04high confidenceMathematics · Level 5 · Measurement strand
VC2M4M04medium 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 Degrees and turnsages 9–10

All Geometry skills →