Generalizing Ceva and Menelaus at once
Trivia
This theorem gives a formula for the area of the triangle formed by three cevians of a given triangle, expressed in terms of the ratios in which the cevians divide the sides -- generalizing both Ceva's Theorem and Menelaus' Theorem as special cases. What is this theorem called?
ARouth's Theorem
BStewart's Theorem
CPick's Theorem
DMorley's Theorem