Using Triangles To Measure A River Small 280×320 Medium 560×640 Large 896×1024 Download Tiff Original 2099×2400 | (389.8 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
