The essentials of descriptive geometry . led surfaces: Plane, singlecurved, and warped. A plane surface is generated by a line moving so as to con-stantly touch straight Hne directrices which either intersect orare parallel. Thus, in Fig. 65, the Hne MN is the generatrix,and the traces of the plane, sS and sS, are the intersecting direc-trices. The Hne MN, then, moves so as to constantly touchthese two Hues, thus generating the plane sSs. In further dis-cussions of plane surfaces it will be understood that surfaces 84 SURFACES 85 with plane faces are meant; the intersections of the plane faces
The essentials of descriptive geometry . led surfaces: Plane, singlecurved, and warped. A plane surface is generated by a line moving so as to con-stantly touch straight Hne directrices which either intersect orare parallel. Thus, in Fig. 65, the Hne MN is the generatrix,and the traces of the plane, sS and sS, are the intersecting direc-trices. The Hne MN, then, moves so as to constantly touchthese two Hues, thus generating the plane sSs. In further dis-cussions of plane surfaces it will be understood that surfaces 84 SURFACES 85 with plane faces are meant; the intersections of the plane faces,or planes, form the edges of the surfaces which hereafter will becalled plane surfaces. Any combination of intersecting planes, usually three or more,forms a plane surface. Many of these combinations havegeometrical names such as prisms, pyramids, etc., with anynumber of faces from three upward. Some of these surfaceshave commercial names which identify the uses to which theyare put, as, for example, the hopper which geometrically is a.
Size: 1311px × 1905px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookidcu3192400462, bookyear1915
