13. An angle is the inclination of two lines,A B, B c, which meet in a point b, called thevertex, or angular point; and the two lines a b,B c, are called the legs or sides of the angle b.A ^_ Obs.—When several lines proceed from the same point,forming different angles, it is necessary to make use… … 14. A reetilinear or right lined angle is thatwhose sides are right lines, as a b c. 15. A curvilinear angle is that whose sidesare curves, as b.
Design · Decoration and ornament · Art
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