Rectilineal
61Right pyramid — Pyramid Pyr a*mid, n. [L. pyramis, idis, fr. Gr. ?, ?, of Egyptian origin: cf. F. pyramide.] [1913 Webster] 1. A solid body standing on a triangular, square, or polygonal base, and terminating in a point at the top; especially, a structure or… …
62Right-lined — a. Formed by right lines; rectilineal; as, a right lined angle. [1913 Webster] …
63Right-lined angle — Angle An gle ([a^][ng] g l), n. [F. angle, L. angulus angle, corner; akin to uncus hook, Gr. agky los bent, crooked, angular, a gkos a bend or hollow, AS. angel hook, fish hook, G. angel, and F. anchor.] 1. The inclosed space near the point where …
64semicubical parabola — Parabola Pa*rab o*la, n.; pl. {Parabolas}. [NL., fr. Gr. ?; so called because its axis is parallel to the side of the cone. See {Parable}, and cf. {Parabole}.] (Geom.) (a) A kind of curve; one of the conic sections formed by the intersection of… …
65Similar — Sim i*lar, a. [F. similaire, fr. L. similis like, similar. See {Same}, a., and cf. {Simulate}.] 1. Exactly corresponding; resembling in all respects; precisely like. [1913 Webster] 2. Nearly corresponding; resembling in many respects; somewhat… …
66Similar figures — Similar Sim i*lar, a. [F. similaire, fr. L. similis like, similar. See {Same}, a., and cf. {Simulate}.] 1. Exactly corresponding; resembling in all respects; precisely like. [1913 Webster] 2. Nearly corresponding; resembling in many respects;… …
67Similar solids — Similar Sim i*lar, a. [F. similaire, fr. L. similis like, similar. See {Same}, a., and cf. {Simulate}.] 1. Exactly corresponding; resembling in all respects; precisely like. [1913 Webster] 2. Nearly corresponding; resembling in many respects;… …
68Solid angle — Angle An gle ([a^][ng] g l), n. [F. angle, L. angulus angle, corner; akin to uncus hook, Gr. agky los bent, crooked, angular, a gkos a bend or hollow, AS. angel hook, fish hook, G. angel, and F. anchor.] 1. The inclosed space near the point where …
69Spherical angle — Angle An gle ([a^][ng] g l), n. [F. angle, L. angulus angle, corner; akin to uncus hook, Gr. agky los bent, crooked, angular, a gkos a bend or hollow, AS. angel hook, fish hook, G. angel, and F. anchor.] 1. The inclosed space near the point where …
70Square — (skw[^a]r), a. 1. (Geom.) Having four equal sides and four right angles; as, a square figure. [1913 Webster] 2. Forming a right angle; as, a square corner. [1913 Webster] 3. Having a shape broad for the height, with rectilineal and angular rather …