The Artisan, or, Mechanic's instructor : containing a popular, comprehensive and systematic view of the following sciences ... also biographical notices of eminent scientific men, enriched by portraits : with many interesting and valuable articles relating to the mechanical and useful arts : the whole intended as a companion to the institutes (1825)
Carey, George G · London : Printed for William Cole · leaf 196
THE ARTISAN. 178 … If the sides AD, D F of the parallelo- grams A BCD, DBCF opposite to the Because AB is parallel to CD, and base B C be terminated in the same point B C meets them, the alternate angles ABC, D ; it is plain that each of the parallelo- BCD, are equal to one another ; and be- grams is double of the…
