Perpendiculars Dropped Any Point in the Equilateral Triangle Small 319×320 Medium 637×640 Large 1020×1024 Download Tiff Original 2390×2400 | (317.4 KB) Description Illustration to show the perpendiculars dropped from any point in the equilateral triangle to the three sides is constant, and equal to the altitude. Keywords altitude, angle, angles, constant, equilateral triangle, perpendicular, perpendiculars, point, points, side, Sides, triangles Galleries Miscellaneous Triangles Source: G.A. Wentworth Plane And Solid Geometry (Boston: Ginn & Company, 1899) 71