American text books of art education : Geometrical drawing (1873)
Smith, Walter, 1836-1886 · Boston : James R. Osgood & Co. · leaf 19
Def. 3S. One right-line figure is said to be in-scribed within another, when the vertices of all theangles of the inscribed figure are in the sides ofthe figure in which it is inscribed, as A BCD. Def. 39. A right-line figure is said to be in-scribed in a circle, when all the vertices of theangles… … Def. 40. A circle is said to be described abouta right-line figure, when it passes through the ver- |tices of all the angles of the right-line figure, asABC, about whien it is described. Def. 41. A right-line figure is said to be de-scribed about a circle, when each side of the right-line figure…
Geometrical drawing
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