GCSE Maths Practice: polygons

Question 7 of 10

This question asks students to identify the polygon with interior angles of 120°.

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\( \begin{array}{l}\text{Which regular polygon has interior angles of } 120^\circ?\end{array} \)

Choose one option:

\( \text{Hexagon} \) \( \text{Pentagon} \) \( \text{Heptagon} \) \( \text{Octagon} \)

Use formula (n-2) × 180°, divide by number of sides, check for 120°.

A regular hexagon has six equal sides and six equal interior angles. Each interior angle = sum of interior angles ÷ number of sides = 720 ÷ 6 = 120°. Understanding interior angles allows students to identify the polygon, solve for missing angles, and reason geometrically in diagrams. Practising these calculations builds confidence in solving polygon problems in GCSE exams and real-life geometry applications.