Science and art drawing : complete geometrical course ; consisting of plane and solid geometry, orthographic and isometric projection, projection of shadow's the principles of map projection, graphic arithmetic and graphic statics (1895)
Spanton, J. Humphrey (John Humphrey) · London : Macmillan · leaf 115
Problem 131. To divide a given triangle ABC into two equal parts hy a linedraivn from a given point D in one of its sides. … Fig. 209. Bisect the side AC in E(Prob. 1), and join EB. Thetriangle is now divided intotwo equal parts. JoinDB. FromE draw the line EH parallel toDB (Prob. 4). Join DH. Thetriangle DBH is equal to thetriangle DBE, so the line DHmust bisect the given triangleABC. EQUIVALENT AREAS 95 Peoblem 132. To…
Geometrical drawing
Internet Archive · Wellesley College Library · Public Domain Mark 1.0. Free to use for anything.
