Mathematics 0580 · IGCSE · Angles

Angles — practice question

The figure depicts a parallelogram. NOT TO SCALE. The interior angle at the top left is marked $(132 - 2x)^\circ$. The interior angle at the bottom left is marked $(15 + 5x)^\circ$. Arrow symbols indicate the parallel sides.
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Determine the size of the smallest interior angle in the parallelogram.

Worked solution & mark scheme

This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Hence, $x = 11$.” …

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