Mathematics Geometryusually ages 9–10

Lines, Rays & Angles

Draw and identify points, lines, line segments, rays, angles (right, acute, obtuse), and perpendicular and parallel lines; identify these in two-dimensional figures

How to tell they’ve got it

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

Draw a pair of perpendicular lines and a pair of parallel lines
Identify all pairs of parallel sides in a trapezoid
Mark a right angle, an acute angle, and an obtuse angle in a given figure

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Try this together

If your child is given a piece of paper and a ruler, can they draw a line segment, mark a point, and then draw another line through that point that runs perfectly parallel to the first?

Where this sits on the map

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

Builds on

Parallel and perpendicular linesages 7–8Y3 horizontal/vertical/perpendicular/parallel lines is prerequisite to drawing and identifying them formally

Types of anglesages 8–9Y4 acute/obtuse angle identification is prerequisite to drawing and labelling angle types

Lines, Rays & Anglesthis skill · ages 9–10

Unlocks

Classifying shapes by line propertiesages 9–10Must draw/identify geometric elements before classifying shapes by them

Numbers on a number lineages 10–11Coordinate system builds on understanding perpendicular lines

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

AC9M4M04medium 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

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

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

VC2M4M04medium confidenceMathematics · Level 4 · 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

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 →