| Arthur Schultze, Frank Louis Sevenoak - Geometry - 1918 - 457 pages
...of its sides 20 in. Find the ratio of the areas of the two rectangles. PROPOSITION III. THEOREM 347. **The area of a rectangle is equal to the product of its** base and altitude. Given R a rectangle with base b and altitude a. To prove R = a X b. Proof. Let U... | |
| Claude Irwin Palmer - Geometry, Solid - 1918 - 177 pages
...AREA OF POLYGONS MEASURING § 333. Axiom. Every geometric magnitude has a numerical measure. § 346. **The area of a rectangle is equal to the product of its** base and altitude. § 347. Theorem. The area of a square equals the square of its side. § 348. Theorem.... | |
| Herbert Ellsworth Slaught - 1918 - 332 pages
...one or both can be measured only approximately. We then have : AREA OF A RECTANGLE 406. THEOREM I. **The area of a rectangle is equal to the product of its** base and altitude. Proof. In case the sides of the rectangle are commensurable, the theorem is proved... | |
| Claude Irwin Palmer, Daniel Pomeroy Taylor - Geometry - 1918 - 436 pages
...measure. From the foregoing considerations the truth of the following statement may be accepted : 346. **The area of a rectangle is equal to the product of its** base and altitude. If A, b, and h are the numerical measures of the area, base, and altitude respec.... | |
| Encyclopedias and dictionaries - 1919
...be contained by AB and BC, or, as it is sometimes expressed, it is the rectangle under AB and B C. **The area of a rectangle is equal to the product of its** base and altitude. Rectangles haying equal bases are to each other as their altitudes; rectangles having... | |
| Encyclopedias and dictionaries - 1919
...be contained by AB and BC, or, as it is sometimes expressed, it is the rectangle under AB and B C. **The area of a rectangle is equal to the product of its** base and altitude. Rectangles haying equal bases are to each other as their altitudes; rectangles having... | |
| Charles Ernest Chadsey - Arithmetic - 1920
...the number of squares in one row by the number of rows. This is often expressed in the shorter form: **The area of a rectangle is equal to the product of its** base and altitude.1 Exercise 2 1. The length of a blackboard is 12 feet and its width is 4 feet. What... | |
| Clarence E. Paddock, Edward Ellsworth Holton - Arithmetic - 1920 - 232 pages
...stands, and the height or altitude is the perpendicular distance between the base and the opposite side. **The area of a rectangle is equal to the product of its** base and altitude. A=bh. (Fig. 21.) Example. Find the area of a rectangle 8 feet long ll and 3 feet... | |
| Matilda Auerbach, Charles Burton Walsh - Geometry, Plane - 1920 - 383 pages
...their remaining dimensions. 23. Any two rectangles compare as the products of their dimensions. 24. **The area of a rectangle is equal to the product of its** base and altitude. 25. The area of a parallelogram is equal to the product of its base and altitude.... | |
| Charles Austin Hobbs - Geometry, Solid - 1921 - 192 pages
...triangle is equivalent to one half of a parallelogram having the same base and altitude. Prop. 149. **The area of a rectangle is equal to the product of its** base and altitude. Prop. 149, Cor. The area of a square is equal to the square of its side. Prop. 150.... | |
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