(a)[3]
Find the value of $p$ and the value of $q$.
(b)[3]
The four angles of a quadrilateral are $x^\circ$, $(x+5)^\circ$, $(2x-25)^\circ$ and $(x+10)^\circ$. Find the value of $x$.
(c)[3]
A regular polygon has 72 sides. Find the size of an interior angle.
(d)[6]
Find the values of $u$, $v$, $w$, $x$ and $y$.
(e)[4]
Find the value of $x$.