Can you solve Presh Talwalkar's 4 equal parts puzzle? The puzzle goes like this: there is one four-sided shape. Imagine the shape as a square with a bottom line that juts out farther to the right, so the non-horizontal side of the right of the shape is a diagonal line. You must divide this shape into four parts that are of equal size and shape. Hint: use four shapes to build up to the starting shape, instead of cutting down the starting shape. Watch the video below to find the solution, then try out some other mindteasers.