Mathematics 0580 · IGCSE · Angles

Angles — practice question

The diagram depicts a quadrilateral with one side extended. The angles shown are 98^{\circ}, 66^{\circ}, 112^{\circ} and an exterior angle marked $x^{\circ}$. The diagram is NOT TO SCALE.
(a)[2]

Find $x$.

(b)[2]

Find the total of the interior angles of a 25-sided polygon.

Worked solution & mark scheme

This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Calculate $360 - (66 + 98 + 112)$” …

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI