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Geometry & MeasuresExam Tips

Exam Tips

Part of Transformations: Rotations — GCSE Mathematics

This exam tips covers Exam Tips within Transformations: Rotations for GCSE Mathematics. Revise Transformations: Rotations in Geometry & Measures for GCSE Mathematics with 12 exam-style questions and 5 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 6 of 6 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.

Topic position

Section 6 of 6

Practice

12 questions

Recall

5 flashcards

Exam Tips

X Forgetting to state direction Always say clockwise or anticlockwise Except 180° which is same both ways
X Confusing CW and ACW formulas 90° CW: (x,y)→(y,-x), 90° ACW: (x,y)→(-y,x) Clockwise goes "with the clock"

Keep building this topic

Read this section alongside the surrounding pages in Transformations: Rotations. That gives you the full topic sequence instead of a single isolated revision point.

Worked Example: 90° RotationSpinning ShapesThree Things to State

Practice Questions for Transformations: Rotations

To fully describe a rotation, which three pieces of information are needed?

  • A. Angle, direction and mirror line
  • B. Centre, angle and direction
  • C. Centre, scale factor and direction
  • D. Column vector, angle and centre
1 markfoundation

Shape A has vertices at (2, 1), (4, 1) and (4, 3). Shape B has vertices at (−1, 2), (−1, 4) and (−3, 4). Fully describe the single transformation that maps shape A onto shape B.

3 marksstandard

Quick Recall Flashcards

Describing Rotations
Must state THREE things: Centre (coordinates), Angle (90°/180°/270°), Direction (CW/ACW except for 180°).
180° Rotation
(x,y) → (-x,-y). Both coordinates change sign. Same clockwise or anticlockwise!

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Worked Example: 90° Rotation

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Transformations: Rotations