Ames, William L. (William Lewis), 1855-, Wischmeyer, Carl · New York, McGraw-Hill book company, inc.; [etc., etc.] · leaf 68
directions.Problem 42.—To pass a planethrough a given point and per-pendicular to two given planes. First Method.—Through thegiven point draw lines per-pendicular to the given planes.The plane of these lines is theone required.Second Method.—Find the lineof intersection of the two given planes. The… … Fig. 112 58 DESCRIPTIVE GEOMETRY Given line A and plane %, Fig. 112, to pass a plane throughA and perpendicular to 2. From any point of the line, such as 6, draw a line Bperpendicular to the plane 2. The plane of the lines A andB is the required plane. Note.—Perpendicular planes do not have their…
Geometry, Descriptive
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
