 | Henry W. Keigwin - Geometry - 1897 - 254 pages
...the measures of those lines when referred to the same unit, we may state § 349: Or, briefly: TJie area of a rectangle is equal to the product of its base and altitude. (o = ab) In the same way § 306 gives: The area of a triangle is equal to one-half the product nf its... | |
 | Middlesex Alfred Bailey - Arithmetic - 1897 - 332 pages
...illustrations, explanations, and proofs, the pupil should turn to p. 121, and to pp. 272, 273, and 274. III. The area of a rectangle is equal to the product of its base by its altitude. IV. The area of a parallelogram is equal to the product of its base by its altitude.... | |
 | Silas Ellsworth Coleman - Arithmetic - 1897 - 180 pages
...is a familiar fact in the case of rectangles ; the common form of statement for this case being that the area of a rectangle is equal to the product of its length and width. From any rhomboid or rhombus, a rectangle of the same dimensions can be constructed,... | |
 | William Chauvenet - Geometry - 1898 - 376 pages
...PROPOSITION III.—THEOREM. 7 The area of a rectangle is equal to the product of its base and altitude, Let B be any rectangle, k its base and h its altitude numerically...the square whose side is the linear unit; then, by the preceding theorem, IX 1 = k X h. But since Q is the unit of surface, — = the numerical measure,... | |
 | 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... | |
 | Webster Wells - Geometry - 1898 - 284 pages
...areas are equal. 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... | |
 | 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.... | |
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The area of a rectangle is equal to the product of its base and altitude. 
