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 19
icular to it. circumference, and a straight line which cuts off that part of the circumference. 17. Rectilineal figures are those which are contained by straight lines. 18. Trilateral figures, or triangles, are contained by three straight lines, . 19. Quadrilateral figures by four straight lines.… … than a right angle. 22. An isosceles triangle, is that which has two sides equal. 13. A circle is a plane figure contained by one line, which is called the circum- ference ; and is such, that all straight lines drawn from the centre to the circumference are equal to one another.* 23. A scalene…
