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 49
Fig. 67. to FA, and at K draw the line KL parallel to GA, cuttingeach other at L. Draw a line through L and A; AL is theconvergent line required. Peoblem 33. To find the centre of a circle.Draw any chord AB, and bisect it by a perpendicular DE, … Fig. 68. which will be a diameter of the circle. Bisect DE in C,which will be the centre of the circle. CONVERGENT LINES ; CIRCLES AND ARCS 29
Geometrical drawing
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