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GCSE Mathematics · key term
Sides or angles that occupy matching positions in two shapes.
Used by AQA and OCR
Specification R12, G5 · Paper 1, Paper 2, Paper 3
Revise: Geometric RatiosTwo shapes are similar when one is an enlargement of the other: corresponding angles are equal, and every corresponding length changes by the same multiplier. This multiplier is the length scale factor.
Sides or angles that occupy matching positions in two triangles.
Use corresponding lengths to find a scale factor. For similar shapes, square it for areas and cube it for volumes.
Match corresponding vertices before comparing sides or angles; the triangles may be turned over or drawn in different orientations.
Write the vertices in corresponding order when stating similarity, for example .
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Specification 9.04a · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Foundation), Paper 4 (Higher), Paper 5 (Higher), Paper 6 (Higher)
Vertices, angles or sides that occupy matching positions in two shapes.
Revise: Triangle SimilarityThe angle–angle test, abbreviated to AA, says that two pairs of equal corresponding angles are enough to prove that two triangles are similar.