Learning Map
MathematicsGeometryusually ages 9–10

Angle Sum Rules

Know that angles at a point sum to 360° (one whole turn), angles on a straight line sum to 180°, and vertically opposite angles are equal; use these facts to find missing angles

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 three angles meet at a point and two of them are 120° and 95°, can your child work out the third angle — knowing all the angles at a point add up to 360°?

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 8–12Angle sum rules (360° at a point, 180° on a line) are applied through reading angle diagrams with correct notation
Degrees and turnsages 9–10Angle facts (at a point = 360°) require degree system knowledge
Angle Sum Rulesthis skill · ages 9–10
Unlocks
Measuring angles (age 9+)ages 9–10Must know angle facts (360°, 180°) to solve unknown angle problems
Angles in triangles (age 10+)ages 10–11Finding unknown angles builds on Y5 angle sum facts (180°, 360°)
Line graphs (age 10+)ages 10–11Constructing pie charts requires knowing angles at a point sum to 360°
Understanding angles (age 10+)ages 10–11Point/straight-line/vertically-opposite angle rules build on Y5 angle-sum knowledge
Understanding angles (age 11+)ages 11–13Builds on KS2 knowledge that angles at a point sum to 360° and on a line to 180°
Fractions, Decimals & Percentagesages 9–10Angle facts (360°, 180°) are structural tools for finding unknowns

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

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

AC9M4M04low 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

AC9M3M05low confidenceYear 3 · Measurement

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

NSW syllabus codes & stages only

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

Victorian Curriculum 2.0 codes & levels only

VC2M6M04high confidenceMathematics · Level 6 · Measurement strand
VC2M3M05medium confidenceMathematics · Level 3 · 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 Classifying shapes by line propertiesages 9–10 Degrees and turnsages 9–10 Estimating Anglesages 9–10

All Geometry skills →