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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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Progressive Arithmetic, Book 2

William James Milne - Arithmetic - 1906 - 302 pages
...rectangle having the same base and altitude ? How, then, may the area of a parallelogram be found ? The area of a parallelogram is equal to the product of its base and altitude, expressed in like units. WRITTEN EXERCISES 216. 1. Find the area of each of these...
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Plane and Solid Geometry

Isaac Newton Failor - Geometry - 1906 - 431 pages
...base of a rectangle is 17 in. and its altitude is 27 in. Compute its area. PROPOSITION IV. THEOREM 401 The area of a parallelogram is equal to the product of its base and altitude. E —4 HYPOTHESIS. ABCD is a £7, b its base, and a its altitude. CONCLUSION. The...
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Plane and Solid Geometry

Isaac Newton Failor - Geometry - 1906 - 440 pages
...base of a rectangle is 17 in. and its altitude is 27 in. Compute its area. PROPOSITION IV. THEOREM 401 The area of a parallelogram is equal to the product of its base and altitude. E ... HYPOTHESIS. ABCD 13 a O, & its base, and a its altitude. CONCLUSION. The area...
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Plane and Solid Geometry

Edward Rutledge Robbins - Geometry - 1907 - 428 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 : O ABCD whose base is b and altitude, h. To Prove : Area of ABCD = b , h. Proof: From...
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Essentials of Arithmetic, Oral and Written

John William McClymonds, David Rhys Jones - Arithmetic - 1907 - 348 pages
...the triangles. Therefore the number of square feet in the lot may be found by multiplying 120 by 40. The area of a parallelogram is equal to the product of its base and altitude. 5. Cut several parallelograms out of paper, and show by the method of Prob. 3 that...
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Progressive Arithmetic, Complete, Books 2-3

William James Milne - Arithmetic - 1907 - 616 pages
...rectangle having the same base and altitude ? How, then, may the area of a parallelogram be found ? The area of a parallelogram is equal to the product of its base and altitude, expressed in like units. WRITTEN EXERCISES 232. 1. Find the area of each of these...
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Intermediate Arithmetic

Bruce Mervellon Watson, Charles Edward White - Arithmetic - 1907 - 272 pages
...into a rectangle of the same base and altitude, how may we find the area of a parallelogram ? 249. The area of a parallelogram is equal to the product of its base and altitude. 250. Oral The following examples relate to parallelograms. Fill in the missing number...
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Elements of Solid Geometry

William Herschel Bruce, Claude Carr Cody - Geometry, Solid - 1912 - 134 pages
...triangle is equal to the difference of the square of the hypotenuse and the square of the other leg. 420. The area of a parallelogram is equal to the product of its base and altitude. 421. Parallelograms having equal bases and equal altitudes are equivalent. 425....
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Plane and Solid Geometry

Walter Burton Ford, Charles Ammerman - Geometry, Plane - 1913 - 378 pages
...Find the area of each of these triangles. Ans. 15 sq. in. I A P * in < h • .ac. r 186. Theorem I. The area of a parallelogram is equal to the product of its base by its altitude. DG F._ GD Given the parallelogram ABCD with b its base and a its altitude. To prove that...
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Algebra: First Course

Edith Long, William Charles Brenke - Algebra - 1913 - 300 pages
...rectangle is formed on b and h as sides and with the same area as the parallelogram ABCD. Corollary 1. The area of a parallelogram is equal to the product of its base by its altitude. That is, a = bh. Corollary 2. All parallelograms having equal bases and altitudes are equal...
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