[144.—THE CROSS AND THE TRIANGLE.]
Cut a Greek cross into six pieces that will form an equilateral triangle. This is another hard problem, and I will state here that a solution is practically impossible without a previous knowledge of my method of transforming an equilateral triangle into a square (see No. 26, "Canterbury Puzzles").
Cut out of paper a Greek cross; then so fold it that with a single straight cut of the scissors the four pieces produced will form a square.
[VARIOUS DISSECTION PUZZLES.]
We will now consider a small miscellaneous selection of cutting-out puzzles, varying in degrees of difficulty.