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Find the size of the biggest angle.
Mathematics 0580 · IGCSE · Angles
Angles — practice question
A pentagon’s interior angles are given in the ratio $4 : 5 : 5 : 7 : 9$.
Worked solution & mark scheme
This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “A suitable form is $\frac{(5-2)\times180}{4+5+5+7+9}\times k$, with $k=1,4,5,7,9$.” …
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