Angles in triangles (age 7+)
Recognise and draw shapes having specified attributes (e.g. a given number of angles or equal faces); identify triangles, quadrilaterals, pentagons, hexagons, and cubes
Share and support
Teaching Table
Set out your lesson
Classify polygons by sides and angles, not appearance.
Ask the learner to explain one prerequisite idea before starting. If uncertain, revisit it; graph order is not learner readiness.
Check readiness rather than assuming source graph order establishes attainment.
Use polygon SVG and scrap paper. Do not infer that this title requires triangle angle sums; the canonical contract asks shape attributes.
Use the supplied stage cards on screen or scrap paper; adult key stays separate.
Materials are ready in each step. Use them on screen or print just the current step. Put teaching examples aside before the learner tries.
What this lesson covers and its limits
These are bounded opportunities, not learner attainment. Partial and blocked source requirements remain so.
- partial: Recognise and draw shapes having specified attributes (e.g. a given number of angles or equal faces); identify triangles, quadrilaterals, pentagons, hexagons, and cubes
Bounded objective: Classify polygons by sides and angles, not appearance. Polygon subset only; cube/equal-face part of description not assessed here.
- partial: Draw a shape with exactly 5 sides (pentagon)
Five-sided drawing opportunity with simple closed-boundary criterion.
- partial: Identify all quadrilaterals in a set of mixed shapes
Quadrilaterals identified from supplied outlines, finite set only.
- partial: Name and draw a hexagon, explaining it has 6 sides and 6 angles
Hexagon drawing plus six-side/six-angle explanation required.
- partial: If {{name}} is given instructions like "draw a shape with 5 sides" or "draw a shape with all equal angles," can they draw it correctly?
Try offers new-visual-and-drawing-application for the bounded objective; it does not establish every part of the source assessment. Polygon subset only; cube/equal-face part of description not assessed here.
Polygon subset only; cube/equal-face part of description not assessed here.
Family records and proof options
Keep a record of your learning
Save photos, notes, and attendance. Export a proof packet for compliance or portfolio reviews.
Learning resources
Reviewed external links that reinforce this concept. They do not replace Gakuva’s teaching approach.
No reviewed resources for this concept yet.
The teaching approach above still stands. Curated practice links will appear here as the shelf fills.
Check understanding
- Draw a shape with exactly 5 sides (pentagon)
- Identify all quadrilaterals in a set of mixed shapes
- Name and draw a hexagon, explaining it has 6 sides and 6 angles
“If your child is given instructions like "draw a shape with 5 sides" or "draw a shape with all equal angles," can they draw it correctly?”
Curriculum record
- Type
- Procedural
- Subject
- Mathematics
- Domain
- Geometry
- Age range
- Ages 7–8
Standards