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Area of trapeziums, rhombuses and kites

Derive the area formulas for trapeziums, rhombuses and kites from parallelograms and rectangles, then use them forwards and backwards.

⏱ 18 min❓ 9 questions

What you'll be able to do

  • ✔I can explain where the formula A = ½(a + b)h for a trapezium comes from
  • ✔I can find the area of a rhombus or kite from its diagonals using A = ½xy
  • ✔I can work backwards from an area to find a missing length

How this works

  1. 1Read the short explanations first — they teach you what you need before each question.
  2. 2Answer each question, then tap Check. A right answer moves you on automatically; if it's wrong, you'll see a friendly explanation of why.
  3. 3Finish all 3 steps to see your score — sign in and subscribe to unlock the full lesson and save it.

What's inside

9 questions and 1 quick teaching card, including:

  • 🔘Multiple choice — Tap the answer you think is best, then check it.
  • 🔢Number answer — Work out the answer and type the number.

👪Grown-up tip: sit alongside younger learners for the first few lessons. Read the questions together and chat about the explanations — that's where the real learning sticks.

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Curriculum: AC9M8M01