(a)[1]
Find the size of angle $ACB$.
(b)[2]
A regular polygon has an exterior angle of $40^\circ$. Work out how many sides the polygon has.
Mathematics 0580 · IGCSE · Angles
Angles — practice question
In triangle ABC, the equal sides are $AB$ and $CB$, so the triangle is isosceles. Angle $ABC = 44^\circ$. The diagram is NOT TO SCALE.