No. LVI.—FOUR QUARTERS AMONG FIVE
A market gardener who has a large square plot of ground wishes to reserve a fourth of it in the shape of a triangle for himself, as is shown in the diagram—
and to divide the remainder among his four sons, so that each shares equally, with plots of similar shape. How did he mark it out for them?
This appears in a less perfect form in “The Twentieth Century Standard Puzzle Book.”