(a(i))[1]
State the mathematical name for this kind of angle.
(a(ii))[1]
State the mathematical name for triangle $ABC$.
(a(iii))[2]
Calculate the value of $x$.
(a(iv))[2]
Find angle $CBD$. Give a geometrical reason for your answer.
(b(i))[1]
State the mathematical name of quadrilateral $PQRS$.
(b(ii))[1]
Work out the perimeter of quadrilateral $PQRS$.
(b(iii))[2]
Find angle $PSR$. Give a reason for your answer.
(b(iv))[1]
$PS$ and $ST$ are two sides of a regular polygon. Work out the number of sides of this regular polygon.
(b(v))[2]
Show that the height, $h$, of quadrilateral $PQRS$ is $5.63\text{ cm}$, correct to 2 decimal places.
(b(vi))[2]
Calculate the area of quadrilateral $PQRS$.