Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 128
ion withB S is the point sought. Planes with Cones or Cylinders. Sec-tions cut by a plane from a cone havealready been defined as conic sections.These sections may be any of the follow-ing: two straight lines, circle, ellipse,parabola, hyperbola. All except the pa-rabola and hyperbola may also be… … Fia:. 126. Frustum ofPentagonal Pyramid 97 78 MECHANICAL DRAWING Ellipse. In Fig. 127 the plane cuts the cone obliquely. Tofind points on the c^urve in plan take a series of horizontal planes.r y z, etc., between points c^ and cP. One of these planes, as iv,should be taken through the center of c…
Architecture · Building
Internet Archive · Kelly Library, University of Toronto · 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-123-338.webp)
