T. Sundara Row's Geometric exercises in paper folding; (1901)
Sundara Rao, T. (Tandalam), b. 1853 · Chicago, The Open court pub. company; [etc., etc.] · leaf 56
IN PAPER FOLDING 37 83. The area of the hexagon is 6 times the area of the triangle HGO, 4 4 . . . . X AS*. Also the hexagon = | • AB - CD. = 1£ times the equilateral triangle on AB. … Fig. 31- 84. Fig. 30 is an example of ornamental folding into equilateral triangles and hexagons. 85. A hexagon is formed from an equilateral tri- angle by folding the three corners to the center. The side of the hexagon is 1 of the side of the equilateral triangle.
Geometry -- Study and teaching · Paper work
Internet Archive · University of California Libraries · Public domain (published before 1931). Free to use for anything.
