Elements of geometry for the use of schools (1854)
Ireland. Board of National Education · Dublin : A. Thom · leaf 57
gle e df. Uponthe side df, draw the perpendicular eg. Letus then measure the lines df, eg, in parts ofthe adopted scale; and as many of these partsas we shall find in them, so many yards, orperches, or furlongs. &c. will be contained inD F and E G. By multiplying, therefore,D F by the half of E… … L. It often happens in practice, that it is neces- Method of r i i measuring sary to measure the distance of the point F, &<> distance ^ x of an inaccea- on which we stand, from another point which sil>le p°>nt-we cannot reach. But the solution of thisproblem has already been given…
Geometry
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