Learning Map
MathematicsGeometryusually ages 8–9

Types of angles

Identify acute and obtuse angles; compare and order angles up to two right angles by size

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 your child looks at the hands on a clock showing different times, can they tell you which angle between the hands is acute (sharper than a right angle) and which is obtuse (wider)?

Where this sits on the map

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

Builds on
Right Angles & Turnsages 7–8Identifying right angles and greater/less than right angle is prerequisite to naming acute/obtuse
Types of anglesthis skill · ages 8–9
Unlocks
Lines, Rays & Anglesages 9–10Y4 acute/obtuse angle identification is prerequisite to drawing and labelling angle types
What Is an Angle?ages 9–10Angle definition builds on understanding right angles
Mathematical Precisionages 8–9Naming acute/obtuse angles exercises precision in geometric vocabulary

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

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

AC9M3M05medium confidenceYear 3 · Measurement

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

AC9M5M04low 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-03high confidenceMathematics K-10 · Stage 2
MA3-GM-03medium confidenceMathematics K-10 · Stage 3

Victorian Curriculum 2.0 codes & levels only

VC2M4M04high confidenceMathematics · Level 4 · Measurement strand
VC2M3M05medium confidenceMathematics · Level 3 · Measurement strand
VC2M5M04medium confidenceMathematics · Level 5 · 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

All Geometry skills →