Here is a scale drawing of a garden.
The scale is 1 cm to 5 m.
A tree is going to be planted in the garden.
The tree must be closer to AD AD\,AD than CDCDCD.
The tree must be less than 20 m from BBB.
Shade the region where the tree can be planted.

134 exam-style questions on AQA GCSE Maths Loci and Construction. Each one has a worked solution and a mark scheme showing where the marks go.