Geometry & MeasuresExam Tips

Exam Tips

Part of Transformations: Reflections · GCSE GCSE Mathematics revision

This exam tips covers Exam Tips within Transformations: Reflections for GCSE Mathematics. Revise Transformations: Reflections in Geometry & Measures for GCSE Mathematics with 13 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 5 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 5 of 6

Practice

13 questions

Recall

5 flashcards

Exam Tips

X Just saying "reflection" Always state the mirror line equation e.g., "Reflection in the line y = x"

X Confusing x = a and y = a x = a is VERTICAL, y = a is HORIZONTAL Think: x-axis is horizontal but x = number is vertical!

Keep building this topic

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

Worked Example: Reflecting in x = 2 Knowledge Organiser: Reflections Mirror Maths Common Mirror Lines

Practice Questions for Transformations: Reflections

A point P has coordinates (3, 5). It is reflected in the x-axis. What are the coordinates of its image P'?

A. (−3, 5)
B. (3, −5)
C. (5, 3)
D. (−3, −5)

1 markfoundation

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

3 marksstandard

Quick Recall Flashcards

Reflecting in y = x

Swap x and y coordinates. Example: (3,4) → (4,3)

Reflecting in y = -x

Swap coordinates AND change both signs. (x,y) → (-y,-x). Example: (3,4) → (-4,-3)

13 questions on Transformations: Reflections — practise free

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Worked Example: Reflecting in x = 2

Knowledge Organiser: Reflections