Here is a scale drawing of a garden. The scale is 1 cm to 4 m.

A fountain is going to be placed in the garden. The fountain must be closer to BC BC\,BC than CDCDCD. The fountain must be less than 20 m from AAA.
Shade the region where the fountain can be placed.
134 exam-style questions on Edexcel GCSE Maths Loci and Construction. Each one has a worked solution and a mark scheme showing where the marks go.