An elementary treatise on geometry : simplified for beginners not versed in algebra (1833)
Grund, Francis J. (Francis Joseph), 1805-1863 · Boston : Carter, Hendee & Co. · leaf 19
A trapezoid is a quadrilateral in which two sides onlyare parallel. A straight line joining two vertices, which are not onthe same side of a geometrical figure, is called a. diagonal. The side which is opposite to the right angle, in aright-angled triangle, is called the hypothenuse. A circle is a… … The curve line itself is called the circumference. Any GEOMETRY. 15 part of it is called an arc, A straight line, drawn fromthe centre of a circle to any point of the circumference,is called a radius. A straight line, drawn from one pointof the circumference to the other, passing through thecentre,…
Geometry, Plane
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