ABCD is a cyclic quadrilateral with <DAB=100º, AB=7cm and BC= 8cm
i) the size of <BCD
ii) the size of <ADC
iii)the perimeter of the quadrilateral
iv)The area of the quadrilateral
I know that in geometry, a cyclic quadrilateral is a quadrilateral whose vertices all lie on a single circle.
Help is greatly appreciated