(a(i))[2]
Calculate angle $CBD$. Give a geometrical reason for your answer.
(a(ii))[4]
Calculate angle $BAD$. Give a geometrical reason for every step in your working.
(b)[5]
Find the circumference of the circle.
Mathematics 0580 · IGCSE · Circle theorems I
Circle theorems I — practice question
Points A, B, C and D lie on a circle with centre O. The angle $COD$ is $124^{\circ}$, while $BCO$ is $35^{\circ}$. NOT TO SCALE.
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