(a)[1]
Determine angle $ACB$.
(b)[2]
An exterior angle of $40^\circ$ is given for a regular polygon. Work out how many sides this polygon has.
Mathematics 0580 · IGCSE · Angles
Angles — practice question
Triangle $ABC$ is an isosceles triangle, with $AB = CB$. The angle $ABC$ measures $44^\circ$. The diagram is not drawn to scale.