GCSE Maths Practice: polygons

Question 4 of 10

This question asks for the exterior angle of a regular pentagon.

‹ ›

\( \begin{array}{l}\text{What is the size of one exterior angle of a regular pentagon?}\end{array} \)

Choose one option:

Divide 360° by the number of sides to get the exterior angle.

Exterior angle = 360° ÷ number of sides. For a pentagon, 360 ÷ 5 = 72°. Understanding this helps students solve polygon problems, calculate interior angles, and reason about geometric shapes. Practising exterior angle calculations improves speed and accuracy in GCSE geometry exams and helps with diagram interpretation and angle proofs.