Plane and solid geometry . , a constant, is false ; V is not < F. 15. Similarly it may be proved that F is not < F. 16. .-. F= F. 13. 14. Reasons 7. §800. 8. §54,3. 9. § 54, 12. 10. § 54, 9. 11. § 54, 6. 12. 802, a. 13. §54,10. 14. Ar^. 13. 15. 16. By steps sim-ilar to 2-14.§ 161, b. Ex. 1324. The volume of an oblique prism is equal to the product ofits right section and a lateral Apply § 788. Ex. 1325. The volume of a regular prism is equal to the product ofits lateral area and one half the apothem of its See Ex. 1319. Ex. 1326. The base of a prism is a
Plane and solid geometry . , a constant, is false ; V is not < F. 15. Similarly it may be proved that F is not < F. 16. .-. F= F. 13. 14. Reasons 7. §800. 8. §54,3. 9. § 54, 12. 10. § 54, 9. 11. § 54, 6. 12. 802, a. 13. §54,10. 14. Ar^. 13. 15. 16. By steps sim-ilar to 2-14.§ 161, b. Ex. 1324. The volume of an oblique prism is equal to the product ofits right section and a lateral Apply § 788. Ex. 1325. The volume of a regular prism is equal to the product ofits lateral area and one half the apothem of its See Ex. 1319. Ex. 1326. The base of a prism is a rhombus having one side 29 inchesand one diagonal 42 inches. If the altitude of the prism is 25 inches,find its volume. Ex. 1327. In a certain cube the area of the surface and the com-bined lengths of its edges have the same numerical value. Find thevolume of tb^ cube. 374 SOLID GEOMETRY Propositiox XII. Theorem804. Tlie volume of a triangular piframid is equal toone third the product of its base and its
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