 | James Howard Gore - Geometry - 1898 - 232 pages
...proportions (by 20), BxC = a' x6' ; C x A a xb' B^a' xb' A a xb PROPOSITION III. THEOREM. QED 248. The area of a rectangle is equal to the product of its base and altitude. It is known (from 247) that two rectangles are to each other as the products of their bases by their... | |
 | George Egbert Fisher, Isaac Joachim Schwatt - Algebra - 1898 - 712 pages
...product of its base by its altitude. What is the area, when the base is 6 and the altitude is 5 ? 23. The area of a rectangle is equal to the product of its base by its altitude. What is the area, when the base is 9 and the altitude is 4 ? 18. General numbers... | |
 | Webster Wells - Geometry - 1899 - 450 pages
...M a ff a 165 304. The dimensions of a rectangle are its base and altitude. PROP. III. THEOREM. 305. The area of a rectangle is equal to the product of its base and altitude. Note. In all propositions relating to areas, the unit of surface (§ 302) is understood to be a square... | |
 | Charles Austin Hobbs - Geometry, Plane - 1899 - 266 pages
...to 6 and an altitude equal to A. <S' 6 S—A ra R=AxB r ax b' QED 170 Proposition 164. Theorem. 200. The area of a rectangle is equal to the product of its base and altitudeULI Hypothesis. R is a rectangle whose base and altitude are B and A respectively. Conclusion.... | |
 | Harvard University - Geometry - 1899 - 39 pages
...of two rectangles are to each other as the products of their bases and their altitudes. Corollary. The area of a rectangle is equal to the product of its base and its altitude. THEOREM IV. The area of a parallelogram is equal to the product of its base and its altitude.... | |
 | George Albert Wentworth - Geometry - 1899 - 500 pages
...length of the rectangle is 4 times its breadth. Compare their areas. PROPOSITION III. THEOREM. 398. The area of a rectangle is equal to the product of its base by its altitude. R Let R be a rectangle, b its base, and a its altitude. To prove that the area... | |
 | William James Milne - Geometry, Modern - 1899 - 258 pages
...long and 7" wide ? How may the amount of surface, or the area of any rectangle, be found? . Theorem. The area of a rectangle is equal to the product of its base by its altitude. Data : Any rectangle, as A, whose base is d and altitude e. To prove area of... | |
 | George Albert Wentworth - Geometry, Solid - 1899 - 248 pages
...drawn, the tangent is the mean proportional between the whole secant and its external segment. 398. The area of a rectangle is equal to the product of its base by its altitude. 400. The area of a parallelogram is equal to the product of its base by its altitude.... | |
 | William James Milne - Geometry - 1899 - 398 pages
...8" long and 7" wide? How may the amount of surface, or the area of any rectangle, be found? Theorem. The area of a rectangle is equal to the product of its base by its altitude. Data : Any rectangle, as A, whose base is d and altitude e. Proof. Assume that... | |
 | George Albert Wentworth - Geometry, Modern - 1899 - 272 pages
...length of the rectangle is 4 times its breadth. Compare their areas. PROPOSITION III. THEOBEM. 398. The area of a rectangle is equal to the product of its base by its altitude. R Let R be a rectangle, b its base, and a its altitude. To prove that the area... | |
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The area of a rectangle is equal to the product of its base and altitude. 
