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GCSE Mathematics · key term
A quadrilateral with four equal sides and four right angles.
Used by Edexcel and OCR
Specification G4, G20 · Paper 1, Paper 2, Paper 3
Revise: Quadrilaterals and TrianglesOn a diagram, matching ticks mark equal lengths, matching arrows mark parallel sides, and a small square marks a right angle. A diagonal joins two corners that are not next to each other.
The result of multiplying a number or quantity by itself, such as .
Specification 1.02a, 8.04b · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Foundation), Paper 4 (Higher), Paper 5 (Higher), Paper 6 (Higher)
The result of multiplying a number by itself; for a number , its square is .
Revise: Number PropertiesUnlike a positive square, a number has only one real cube root.
In a classification question, name every shape that satisfies the stated property. A square is also a rectangle, a rhombus and a parallelogram.
Add the squares when finding the hypotenuse; subtract the known shorter side's square from the hypotenuse's square when finding another shorter side.
Take the square root at the end: the result before this is the square of the missing length, not the length itself.
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