This multiple-answer question reviews key properties of Pythagoras' Theorem.
Only use in right-angled triangles; it relates side lengths, not areas.
Pythagoras' Theorem applies only to right-angled triangles and relates the lengths of the three sides. It does not calculate areas, and it cannot be applied to triangles without a 90° angle. This distinction is vital for correctly applying the theorem in problems involving right-angled triangles, distance calculations, and diagonal computations. Practising multiple-answer applications reinforces understanding and ensures accuracy in GCSE geometry problems.
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