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.
20 exam-style questions on AQA GCSE Maths Congruent Triangles. Each one has a worked solution and a mark scheme showing where the marks go.