This carefully selected set of exam questions has fully-worked solutions designed for students to go through at home. This can save a lot of valuable time in class.
Click https://tes.com/.../Exam Question Practice to download questions on 40 other topics.
The questions cover the full range of skills expected at GCSE for this topic. There are a few very challenging problems towards the end. They are ideal for consolidation or revision.
Note that the part of this topic that relates to 3D shapes is covered in the separate booklet Similar Solids.
I usually print the questions as an A5 'booklet' and issue them in class or give them out as a homework. I also make them available for a student who wants to do independent study.