Area of Triangle Small 320×158 Medium 640×317 Large 1024×506 Download Tiff Original 2400×1187 | (128.5 KB) Description Parallelogram illustration to show where the area of a triangle formula comes from. Keywords altitude, area, base, height, parallelogram, square, squares, triangle Galleries Miscellaneous Triangles Source: Claude Irwin Palmer Library of Practical Electricity: Practical Mathematics For Home Study (New York: McGraw-Hill Book Company, Inc., 1919) 116
