Practical plane and solid geometry for advanced students, including graphic statics, adapted to the requirements of the South Kensington syllabus (1899)
Harrison, Joseph, Baxandall, George Albert · London Macmillan · leaf 508
scale (\) and multiplied by k (3); or measureddirectly on the scale on which OK (f) = U2 (or 9) units. 387. Probl*em.—To find the number of units of area ina given irregular polygon, having given the unit of lengthS. First reduce the given polygon by Prob. 30 to an equivalent tri-angle, then find… … X, X?A 0
