Using Triangles To Measure A River Small 320×83 Medium 640×166 Large 1024×265 Download Tiff Original 2400×622 | (159.9 KB) Description Illustration that uses triangles to measure the distance across a river. Keywords distance across river, measurement, triangle, triangles Galleries Miscellaneous Triangles Source: C. A. Hart & Daniel D. Feldman Plane And Solid Geometry (New York: American Book Company, 1911) 33
