Here is a scale drawing of a rectangular playground ABCDABCDABCD. The scale is 1 cm to 10 m.
A climbing frame is to be installed in the playground. The frame must be closer to AD AD\,AD than ABABAB. The frame must be less than 60 m from CCC.

Shade the region where the climbing frame 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.