Mathematics 0580 · IGCSE · Angles

Angles — practice question

The diagram displays angles at a point, with each one marked $a^\circ$.
(main)[1]

Give the geometrical reason for the result $a=72$.

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Missing angle obtained correctly by using $360^{\circ}$” …

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