X Just saying "rotation" without details
Always state centre, angle, and direction
Incomplete description loses marks
X Confusing CW and ACW
CW = clockwise (like clock hands)
ACW = anticlockwise (opposite direction)
This exam tips covers Common Mistakes within Transformations for GCSE Mathematics. Revise Transformations in Geometry & Measures for GCSE Mathematics with 16 exam-style questions and 5 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. 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.
Practice questions for Transformations
A translation is described by the vector (3, −2). What does this mean?
Shape A is mapped to shape B by a translation. Describe fully what information is needed to describe a translation.
Quick recall flashcards
Rotation
State CENTRE, ANGLE, and DIRECTION (CW/ACW). Shape turns around fixed point. 180° is same CW or ACW.
Reflection
State the MIRROR LINE (equation). Shape flips over. Points and images are equidistant from mirror line.