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SingaporeMathsQuick questions
Geometry and Circle Properties
Quick questions on Congruence and similarity explained: N(A)-Level Mathematics Geometry and Circle Properties
4short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What are congruent figures?Show answer
Two figures are congruent if they are exactly the same shape and the same size. That means:
What are similar figures?Show answer
Two figures are similar if they are the same shape but possibly different sizes. That means:
What is the scale factor?Show answer
The scale factor is how many times bigger one figure is than the other. Find it from a pair of corresponding sides:
What are matching corresponding parts?Show answer
The trick is matching the parts correctly. Corresponding sides lie between corresponding angles. In a clear diagram, the longest side of one figure matches the longest side of the other, and so on.
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