26. I can't figure it out it must be some kind of isotope I think ? The diagonals of rectangle ABCD intersect at E. If DE = 3x + 1 and AC = 5x + 4, nd the value of x. Quadrilaterals Name: 1. EFis the median. Get your answers by asking now. A. Please explain problem step by step. Proving that a Quadrilateral is a Rectangle i looked at videos and still don't understand. (4) In the accompanying diagram, is tangent to circle O at A, is a secant, and . Then, x degree = angle MAP because they are vertically opposite angles. In rectangle ABCD m