Your question is Bisect Trapezoid Cake. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
If you have a cake in the shape of a trapezoid which has a piece missing from the middle, how would you bisect the remaining cake/trapezoid so that both pieces have the same area.