A=45 degree I had the same example ... Even if a angle is 90 degrees is not necessarily a right triangle, so the angle A = 45 degrees
Try this solution:
according to the condition ∠1+∠2=180, it means that
74-x+86-2x=180, ⇒ x= -20/3
answer: -20/3
Are you solving for x or y?
The volume will increase as each layer is added because you are adding more to that certain shape
