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 87
93. To draw an inscribed and an escribed circle, tangential tothree given straight lines, forming a triangle ABC. Note.—An escribed circle is alsocalled an excircle. Bisect the angles BAC andACB by lines intersecting in E.Erom E draw the line EH perpen-dicular to AD. With E as centre,and EH as… … Fig. 157. TANGENTS AND TANGENTIAL ARCS 67 Problem 94. A pri7ici2jle of inscribed and cscriled circles. If a triangle ABC be taken, and AF, BD, and CE,drawn from the three anglesperpendicular to the oppositesides, they will all intersectat the point H. Join thepoints D, E, E. This will forma…
Geometrical drawing
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