ABCD is a cyclic quadrilateral.
angle A = 2x+4
angle B = y+3
angle C = 2y+10
angle D = 4x - 5
I have been trying to solve this question for about 2hrs now. I find the angles, but they don not add up to 360, no matter what method I try. I've tried elimination, substitution and cross multiplication. Nothing gives the answer. My worksheet is due tomorrow. Any help for this question is greatly appreciated. Thanks in advance.