Practical carpentry, joinery, and cabinet-making : being a new and complete system of lines for the use of workmen, founded on accurate geometrical and mechanical principles ... / by Peter Nicholson ; revised by Thomas Tredgold (1853)
Nicholson, Peter, 1765-1844, Tredgold, Thomas, 1788-1829 · London : Thomas Kelly · leaf 30
he angle ACEis equal to twice the angle CDA. By the same reason theangle BCE is equal to twice the angle CDB; therefore the whole angle ACB is double thewhole angle ADB. Next, let the angle at the centre (Jig. 2) be without the angle at the circumference. It maybe demonstrated, as in the first… … theorem 35. 92. The angles, ADB, AEB, in tne same segment, AEB, of a circle, are equal to one another.Fig. 1.
Carpentry · Joinery · Cabinetwork
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