Edexcel GCSE Mathematics · 1MA1
Specification G20 · Paper 1, Paper 2, Paper 3
A triangle containing one angle of exactly .
Revise: Pythagoras' TheoremPythagoras' theorem links the three side lengths of a right-angled triangle.
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GCSE Mathematics · key term
A triangle containing one 90° angle.
Used by Edexcel and OCR
Specification G20 · Paper 1, Paper 2, Paper 3
A triangle containing one angle of exactly .
Revise: Pythagoras' TheoremPythagoras' theorem links the three side lengths of a right-angled triangle.
In a 3D figure, draw or identify the right-angled triangles you need. You may have to find a base or face diagonal before finding a length through the solid.
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Specification 8.04a, 10.05a · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Foundation), Paper 4 (Higher), Paper 5 (Higher), Paper 6 (Higher)
Revise: Triangle PropertiesThis proves the equal-tangents result using properties of right-angled triangles.
A triangle containing an angle of 90°.