Find out the different quadrangle and press it in the limited time. The operation is very simple. Find out the quadrangle and click (tap) it. And there a many interesting titles you can get. Let's challenge. quadrangle, shape recognition, puzzle, geometric shapes, square, rectangle, parallelogram, trapezoid, cognitive skills, brain training, concentration, memory, spatial reasoning, visual perception, challenge, fun, game, educational, kids, adults, tap, click, limited time, problem solving