Plane and solid geometry . Frustum of cone with circular base. V= I R(B -h b -{- VB • 5). §898. V=iTrH{B^-hi •2 + 2?. r). §899. Spherical triangle- a -\- b>c. §941. Spherical polygon. a-j-b + c+ ...<360°. §942. Polar triangles. ^ + a = 180°, B+b-- :zl80^... §947. Spherical triangle. A+B+O 180^ and < 540^. §949. Sphere. S = 4: wB\ §971. Spheres. S B^ 2)2SI Ri-2 jr)r2 §972. Zone. Z = H2irB. §979. Zones, Z H Z* Rf §980. Lune. L iVIS 360 §987. L = 2N. §988. Spherical triangle. K=(A-^B+C) -180°=^. §990. Spherical polygon. K= r- (?i-2) 180. §993. Sphere. Y= S\B, §997. F=|7ri?3 = i7r. Dh §99

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Plane and solid geometry . Frustum of cone with circular base. V= I R(B -h b -{- VB • 5). §898. V=iTrH{B^-hi •2 + 2?. r). §899. Spherical triangle- a -\- b>c. §941. Spherical polygon. a-j-b + c+ ...<360°. §942. Polar triangles. ^ + a = 180°, B+b-- :zl80^... §947. Spherical triangle. A+B+O 180^ and < 540^. §949. Sphere. S = 4: wB\ §971. Spheres. S B^ 2)2SI Ri-2 jr)r2 §972. Zone. Z = H2irB. §979. Zones, Z H Z* Rf §980. Lune. L iVIS 360 §987. L = 2N. §988. Spherical triangle. K=(A-^B+C) -180°=^. §990. Spherical polygon. K= r- (?i-2) 180. §993. Sphere. Y= S\B, §997. F=|7ri?3 = i7r. Dh §998. Spheres, V B^ D^ §999. Spherical sector. V=Z^iB. §1004. V=^rrB^.H. § 1005. Spherical wedge. W NV 360 § 1008. W=LiB. § 1009. Spherical triangular pyramid. Y=K\B. § 1012. Any spherical pyramid. r=KiB. § 1013. 474 SOLID GEOMETRY APPENDIX TO SOLID GEOMETRY SPHERICAL SEGMENTS 1015. Defs. A spherical segment is a solid closed figurewhose bounding surface consists of a zone and two

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectgeometr, bookyear1912