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" The area of a parallelogram is equal to the product of its base and its height: A = bx h. "
Elements of Plane Geometry: For the Use of Schools - Page 59
by Nicholas Tillinghast - 1844 - 96 pages
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Mathematics, mechanics, heat

American School (Chicago, Ill.) - Engineering - 1903 - 392 pages
...195. Corollary. The area of a square is equal to the square of one of its sides. THEOREn LXIV. Ip6. The area of a parallelogram is equal to the product of its base and altitude. Let ABCD be a parallelogram leaving its altitude DF equal to a and its base AD equal...
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Plane Geometry

Fletcher Durell - Geometry, Plane - 1904 - 382 pages
...area of a rectangle 8 yds. long and 5 ft. wide. BOOK IV. PLANE GEOMETRY PROPOSITION IV. THEOREM 385. The area of a parallelogram is equal to the product of its base by its altitude. KB FC Given the ZZ7 ABCD with the base AD (denoted by 6) and the altitude DF (denoted by...
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Solid Geometry

Fletcher Durell - Geometry, Solid - 1904 - 232 pages
...side. BOOK IV. 383. The area of a rectangle is equal to the product of its base by its altitude. 385. The area of a parallelogram is equal to the product of its base by its altitude. 389. The area of a triangle is equal to one-half the product of its base by its altitude....
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Plane and Solid Geometry

Fletcher Durell - Geometry - 1911 - 553 pages
...Find, in square feet, the area of a rectangle 8 yds. long and 5 ft. wide. PROPOSITION IV. THEOREM 385. The area of a parallelogram is. equal to the product of its base by its altitude. K__B__ pa A b D Given the ZZ7 ABCD with the base AD (denoted by b) and the altitude DF (denoted...
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Plane and Solid Geometry

George Albert Wentworth - Geometry - 1904 - 496 pages
...evident by dividing the figure into squares, each BOOK IV. PLANE GEOMETRY. PROPOSITION IV. THEOREM. 400. The area of a parallelogram is equal to the product of its base by its altitude. CF CE A b DA b D Let AEFD be a parallelogram, b its base, and a its altitude. To prove that...
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Plane Geometry Suggestive Method

George Clinton Shutts - 1905 - 260 pages
...fractional number of times in the base and altitude the same rule is reached. PROPOSITION IV. 330. Theorem. The area of a parallelogram is equal to the product of its base and altitude. Suggestion. § 323 and § 326. PROPOSITION V. 331. Theorem. The area of a triangle...
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Advanced Arithmetic

Elmer Adelbert Lyman - Arithmetic - 1905 - 268 pages
...C'fi, thus forming a rectangle with the, same base and altitude as the given parallelogram. Therefore,^ the area of a parallelogram is equal to the product of its base and altitude, or A = ab. 188. The Triangle. Since the line AB divides the parallelogram into two...
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Plane Geometry

Edward Rutledge Robbins - Geometry, Plane - 1906 - 268 pages
...QED 372. THEOREM. The area of a square is equal to the square of its side. (See 371.) 373. THEOREM. The area of a parallelogram is equal to the product of its base by its altitude. Given : L3 ABCD whose base is b and altitude, h. To Prove : Area of ABCD = b - h. Proof:...
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Progressive Arithmetic, Book 3

William James Milne - Arithmetic - 1906 - 364 pages
...550. The area of any parallelogram is equal to that of a rectangle having the same base and altitude. Hence, The area of a parallelogram is equal to the product of its base and altitude. 551. Find the area of each of these parallelograms : BASE ALTITUDE BASE ALTITUDE...
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Progressive Arithmetic: Third Book, Book 3

William James Milne - Arithmetic - 1906 - 364 pages
...550. The area of any parallelogram is equal to that of a rectangle having the same base and altitude. Hence, The area of a parallelogram is equal to the product of its base and altitude. 551. Find the area of each of these parallelograms : BASE ALTITUDE BASE ALTITUDE...
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