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" ... 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... "
A Treatise of Practical Surveying: Which is Demonstrated from Its First ... - Σελίδα 31
των Robert Gibson - 1806 - 452 σελίδες
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A Treatise of Practical Surveying: Which is Demonstrated from Its First ...

Robert Gibson - 1795 - 319 σελίδες
...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...

The Theory and Practice of Surveying: Containing All the Instructions ...

Robert Gibson - 1811 - 508 σελίδες
...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...

The Theory and Practice of Surveying: Containing All the Instructions ...

Robert Gibson - 1814 - 508 σελίδες
...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...

A Treatise on Practical Surveying: Which is Demonstrated from Its First ...

Robert Gibson - 1818 - 478 σελίδες
...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...

The Theory and Practice of Surveying: Containing All the Instructions ...

Robert Gibson - 1821 - 544 σελίδες
...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....

Elements of Geometry and Trigonometry: With Notes

Adrien Marie Legendre - 1822 - 367 σελίδες
...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....

The Theory and Practice of Surveying: Containing All the Instructions ...

Robert Gibson - 1832 - 348 σελίδες
...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...

The Theory and Practice of Surveying: Containing All the Instructions ...

Robert Gibson - 1833 - 348 σελίδες
...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...

Popular Mathematics: Being the First Elements of Arithmetic, Algebra, and ...

Robert Mudie - 1836 - 496 σελίδες
...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...

Popular Mathematics: Being the First Elements of Arithmetic, Algebra, and ...

Robert Mudie - 1836 - 496 σελίδες
...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...




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