ABC ABC\,ABC is a straight line.

Show that ABD ABD\,ABD is an isosceles triangle
Practise Eduqas GCSE Maths Angles with exam-style questions for Foundation and Higher tier. 31 questions, matched to the Eduqas GCSE Maths (C300QS) specification and written in Component 1 and Component 2 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.