Triangle Small 320×203 Medium 640×406 Large 1024×650 Download Tiff Original 2400×1524 | (134.3 KB) Description Triangle with labels A, B, C, D Keywords side, Sides, triangle, triangles Galleries Miscellaneous Triangles Source: Claude Irwin Palmer Library of Practical Electricity: Practical Mathematics For Home Study (New York: McGraw-Hill Book Company, Inc., 1919) 128
