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Find the value of $d$.
Mathematics 0580 · IGCSE · Symmetry
Symmetry — practice question
A regular pentagon is shown. $AB$ serves as the line of symmetry, and the top central angle is marked $d^{\circ}$. The diagram is not drawn to scale.
Worked solution & mark scheme
This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The expression is $180 \times \frac{5-2}{5}$ or $\frac{360}{5}$” …
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