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 67
Fig. 111. 46 PRACTICAL PLANE GEOMETRY Peoblem 54. … To inscribe a square in a giventriangle ABC. From C draw CD perpen-dicular to AB, and CE perpen-dicular to CD, and equal to it.Draw the line EB cutting ACin F. Draw FG- parallel toAB. Draw the lines FH andGL perpendicular to AB. ThenFGLH is the square required. Problem 55. In a given triangle ABC,…
Geometrical drawing
Internet Archive · Wellesley College Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Divina proportione : opera a tutti glingegni perspicaci e curiosi necessaria oue ciascun studioso di philosophia: prospettiua pictura sculptura: architectura: musica: e altre mathematice: suavissima: sotile: e admirabile doctrina consequira: e delecterassi: co[n] varie questione de secretissima scientia (1509)](https://img.insideoutlibrary.com/img/200/ia-divinaproportion00paci-88-142.webp)