GCSE Maths Practice: congruence-and-similarity

Question 10 of 10

This question focuses on which transformations preserve similarity, a fundamental concept in GCSE geometry.

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\( \begin{array}{l}\text{Which transformations preserve similarity?}\end{array} \)

Select all correct options:

Check which transformations keep angles the same and side lengths proportional. Ignore those that distort shape.

Similarity in geometry means shapes have the same angles and proportional sides. Transformations that preserve similarity include rotations, reflections, and enlargements. These transformations do not change the angles and maintain the ratios of corresponding sides. Stretching or shearing distorts the angles or side ratios, so similarity is not preserved. Understanding which transformations preserve similarity helps in solving geometric problems, working with scale diagrams, and interpreting models. Practicing visual recognition of these transformations improves speed and accuracy in exams.