Illustration used to show how to draw a perpendicular to a straight line from a given point on the line when the point is near the end of the line.
International Correspondence Schools Mechanical And Electrical Engineering (Scranton: International Textbook Company, 1902) Geometrical Drawing Section 29
2400×1753, 174.7 KiB
1024×747, 21.3 KiB
640×467, 11.8 KiB
320×233, 5.3 KiB