GCSE Maths Practice: congruence-and-similarity

Question 7 of 10

This question focuses on which transformations preserve congruence, highlighting reflection.

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\( \begin{array}{l}\text{Which transformation preserves congruence?}\end{array} \)

Choose one option:

Check that the transformation keeps angles and side lengths identical. Reflections do.

Reflection is a transformation where a shape is flipped across a line. All side lengths and angles remain the same, preserving congruence. Unlike stretching or shearing, which distort shape or angles, reflections maintain exact size and shape. Understanding which transformations preserve congruence is crucial in geometric proofs, diagrams, and real-world applications like design or architecture. Practicing reflection problems improves students' visual reasoning and their ability to identify congruence in transformed shapes.