What is the length of CD to the nearest tenth. The shape is a rectangle with a line than somewhat crosses the middle but doesn't follow the path (corner to corner) top left corner is B. Bottom left corner is A. Bottom right corner is E. And top right is D. And the line that goes through the rectangle is C. The line that stops short goes from the A corner to the left of D corner (it's not actually in the corner it's to the left of it). Side BA is 10 cm. The length of AC is 20cm. The length of side AE is 21cm. Where line CD and AC meet is an obtuse angle of 150. If you can solve this you are smarter than Albert Einstein