ABCD is a quadrilateral inscribed in a circle, as shown below:
What equation can be used to solve for angle A?
(x + 16) + (6x − 4) = 180
(x + 16) + (x) = 90
(x + 16) − (2x + 16) = 180
(x + 16) − (x) = 90
1 answer
hard to say, but opposite angles are supplementary, right?