Triangle LMN LMN\,LMN is an isosceles triangle. LM=LNLM = LNLM=LN. The exterior angle at vertex M M\,M is 115∘115^\circ115∘.
Work out the size of the interior angle x x\,x at vertex MMM.
Work out the size of the angle y y\,y at vertex LLL.
Give reasons for your answer.
Practise Edexcel GCSE Maths Angles with exam-style questions for Foundation and Higher tier. 31 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.