I think there were a lot of books like these published in the 1960s. This book is not one of the best, the illustrations, line drawing are pretty poor and the text is a bit haphazard. There is even a typo, where the planets are accidentally described as going around the earth.

A wide variety of mathematical subjects is covered including music theory, perspective, pointillism, algebra, data presentation, topology, ciphers, tangrams, geometrical shapes in nature, the regular solids, conic sections, polygons, angles, and parallel lines. ( )