🔢 Mathematics · Geometry
Angles in triangles (age 11+)
Derive and apply formulae for the area of triangles, parallelograms, and trapezia, and for the volume of cuboids and other prisms (including cylinders), connecting each formula to its geometric reasoning
Typical age: 11–14 years
“If your child needs to tile a triangular section of a patio with a base of 4 m and height of 3 m, can they work out the area to know how many tiles to buy?”
0 / 3 mastered
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Needs first
- Estimating answers (age 9+)REQUIRED
Area formulae build on KS2 rectangle area/perimeter
- Area of Triangles & ParallelogramsREQUIRED
KS3 area/volume formulae extend KS2 area of parallelograms and triangles
- Estimating answers (age 10+)REQUIRED
KS3 volume of prisms extends KS2 volume of cuboids (V = l × w × h)