part a)
the sizes of the angles, in degrees, of the quadrilateral are:
x+10
2x
x+90
x+20
use this information to write down an equation in terms of x.
Answer: x+10+2x+x+90(x+20)=360
PART B)
use your answer to part (A) to work out the size of the smallest angle of the quadrilateral.
how do i answer this and explain the reasons why you did what you did.
thanks
:)