 | Robert Gibson - 1795 - Liczba stron: 384
...are called irregular Polygons, as an irregular Pentagon, Hexagon, &c. 5i. Four Quantities are faid to be in Proportion when the Product of the Extremes...multiplied by D, be equal to B multiplied by C, then A is faid to be to B as C is to D. POSTULATES or PETITIONS. 1. That a right Line may be drawn from any one... | |
 | Robert Gibson - 1811 - Liczba stron: 580
...each other, then they are called irregular polygons, as an irregular pentagon, hexagon, SCc. .« 49. Four quantities are said to be in proportion when...to D. POSTULATES OR PETITIONS. 1. That a right line mav be drawn from any one given point to another. 2. That a right line may be produced or continued... | |
 | Robert Gibson - 1814 - Liczba stron: 558
...to each other, then they are called irregular polygons, as an irregular pentagon, hexagon, 6,'c. 49. Four quantities are said to be in proportion when...the means : thus if A multiplied by D, be equal to В multiplied by C} then A is said to 1.3 to. В as С is to D. POSTULATES OR PETITIONS. 1. That a... | |
 | Robert Gibson - 1818 - Liczba stron: 502
...to each other, then they are called irregular polygons ; as au irregular pentagon, hexagon, &c. 86. Four quantities are said to be in proportion •when the product of the extremes is equal to that of means : thus if A multiplied by D, be equal to B multiplied by C, then A is said to be to B as C is... | |
 | Robert Gibson - 1821 - Liczba stron: 594
...to each other, then they are called irregular polygons, as an irregular pentagon, hexagon, 8fc. 49. Four quantities are said to be in proportion when...multiplied by C, then A is said to be to B as C is to D. PO8TULATES OR PETlTlONS. 1. That a right line may be drawn from any one given point to another. 2.... | |
 | Adrien Marie Legendre - 1822 - Liczba stron: 394
...proportional, if m and n being any two numbers such that n A =m B, we have likewise n C =m D. The magnitude A is said to be to B as C is to D ; the four together are named a proportion or analogy, and are written thus, A : B : : C : D. Note.... | |
 | Robert Gibson - 1832 - Liczba stron: 290
...to each other, then they are called irregular polygons, as an irregular pentagon, hexagon, &c. 49. Four quantities are said to be in proportion when...equal to B multiplied by C, then A is said to be to £ as C is to D. POSTULATES, OR PETITIONS. 1. That a right line may be drawn from anyone given point... | |
 | Robert Gibson - 1833 - Liczba stron: 436
...to each other, then they are called irregular polygons, as an irregular pentagon, hexagon, &c. 49. Four quantities are said to be in proportion when...multiplied by C, then A is said to be to B as C is to D. . 2. That a right line may be produced or continued at pleasure. 3. That from any centre and with any... | |
 | Robert Mudie - 1836 - Liczba stron: 542
...second and third the means ; and the definition may be also expressed, Four quantities are proportional when the product of the extremes is equal to that of the means. As this is a perfectly simple definition, it holds true conversely, so that we can either infer the... | |
 | Robert Mudie - 1836 - Liczba stron: 524
...second and third the means ; and the definition may be also expressed, Four quantities are proportional when the product of the extremes is equal to that of the means. As this is a perfectly simple definition, it holds true conversely, so that we can either infer the... | |
| |
... they are called regular polygons. They sometimes are named from the number of their sides, as a five-sided figure is called a pentagon, one of. six sides a hexagon, &c. but if their sides are not equal to each other, then they are called irregular... 
