(a(i))[1]
Write down the mathematical name for the line $OD$.
(a(ii))[1]
Write down the mathematical name for the line $BC$.
(b(i))[2]
Calculate angle $EGF$ and include a reason for your answer.
(b(ii))[2]
Calculate angle $GEF$ and include a reason for your answer.
(b(iii))[2]
Calculate angle $AEG$ and include a reason for your answer.
(b(iv))[2]
Calculate angle $EGD$ and include a reason for your answer.