ABC ABC\,ABC is an equilateral triangle. D D\,D lies on BC BC\,BC and AD AD\,AD is perpendicular to BCBCBC.

Prove that angle CAD CAD\,CAD is equal to angle BADBADBAD.
Practise Edexcel GCSE Maths Congruent Triangles with exam-style questions for Foundation and Higher tier. 28 questions, matched to the Edexcel GCSE Maths (1MA1) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.