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GCSE Mathematics · key term
The amount of turning between two rays that meet at a vertex, measured in degrees.
Used by AQA, Edexcel and OCR
Specification G15 · Paper 1, Paper 2, Paper 3
The angle that measures how far one direction turns from another, measured in degrees (°).
Revise: Measuring GeometryAn angle is measured in degrees (°). Put the centre of a protractor on the vertex, where the two arms meet, and align its zero line with one arm. Read the scale that starts at zero on that arm.
Specification G15 · Paper 1, Paper 2, Paper 3
Check which protractor scale starts at zero on the angle’s first arm; an acute angle must be less than 90°.
For ‘the bearing of B from A’, put the north line at A. Write the clockwise angle as three figures.
For an angle, first decide whether it should be acute, obtuse or reflex. This helps you choose the correct protractor scale and reject an implausible answer.
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The amount of turn between two lines or rays that meet at a point, measured in degrees.
An angle measures a turn about its vertex, the point where its two arms meet. Put the centre mark of the protractor exactly over the vertex and align its baseline with one arm.
Specification 8.03a · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Foundation), Paper 4 (Higher), Paper 5 (Higher), Paper 6 (Higher)
Revise: Angles at a PointTogether, the angles fill the whole turn without gaps or overlaps.