(a(i)(a))[1]
Write down the geometric name for line BOD.
(a(i)(b))[1]
Write down the geometric name for line ABC.
(a(ii))[2]
Write down the two geometric reasons that make angle AOB equal to $62^\circ$.
(a(iii))[1]
Give the geometric reason that angle DOE is also $62^\circ$.
(a(iv)(a))[1]
Calculate angle DEB.
(a(iv)(b))[2]
Calculate angle ODE.
(a(iv)(c))[2]
Calculate angle BEF.
(b)[2]
Write down two geometric properties that show a polygon is regular.
(c)[2]
Calculate the interior angle of a regular 10-sided polygon.