“Missing Square Puzzle”: Solution

Solution to Missing Square Puzzle:
It’s not a true triangle — the hypotenuse is bent just slightly, by about 1/28th of a unit, to permit the deception. If you can’t see the bend, there’s another giveaway: If it were a true triangle, the red and blue pieces would be similar. But the blue triangle has a ratio of 5:2, and the red triangle has the ratio 8:3.
(Image: Wikimedia Commons)
