@fredkeng35: Stop wasting time setting up tedious midpoint systems on the SAT! Here is how you can find the fourth vertex of a parallelogram in seconds using a simple vector shift method. 1. Calculate the vector shift between two adjacent vertices. 2. Apply that exact vector shift to the opposite vertex! Master SAT math strategies and solve coordinate geometry problems faster with Sovi.ai! ⚡ #SATMath #MathHacks #Geometry #StudyTips #SoviAI