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Question 3

Triangle LMN LMN\,LMN is an isosceles triangle. LM=LNLM = LNLM=LN. The exterior angle at vertex M M\,M is 115∘115^\circ115∘.

a.

Work out the size of the interior angle x x\,x at vertex MMM.

[1]
b.

Work out the size of the angle y y\,y at vertex LLL.

[1]
c.

Give reasons for your answer.

[1]

Angles Questions

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