A complete and practical solution book for the common school teacher (1899)
Fairchild, J[ohn] T[heodore] [from old catalog] · Crawfis College, Ohio, The author · leaf 178
angles, the perpen- dicular CH = VAC2— AH3 = V4i2— 52 = V3^=^V3T (5) The area of a triangle is expressed by \ the product of the base and height, and a triangle is equal to half arectangle of equal base and height. (6) .*. The whole triangle ABC is=^ABxCH=^XiV3= *2V3. (7) The triangle ADB=|ABx… … 164 FAIRCHIL&S SOLUTION BOOK. :. 5V3 = HC=FD+DG+ED. PROBLEM 347. Three horses are tethered each to a rope 15 rd. in length to the cor-ners of an eqilateral triangle whose side is 30 rd: over how much spacecan they graze, and how much remains ungrazed? Solution. (1) Let ABC be the triangle. CFD,…
Arithmetic · Geometry
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