(a)[3]
Write the mathematical name beneath each triangle shown.
(b(i))[1]
Calculate the perimeter of this shape.
(b(ii))[3]
Calculate the area of this shape. Include the units in your answer.
(c(i))[1]
State a reason why angle ACB = $90^\circ$.
(c(ii))[3]
Calculate $AC$.
(c(iii))[5]
Calculate the shaded area.