## Elements of Geometry and Trigonometry |

### From inside the book

Results 1-5 of 47

Page 9

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**surface**, which is not a plane**surface**, or composed of plane**surfaces**, is a curved**surface**. 8. A solid or body is that which has length , breadth , and thickness ; and therefore combines the three dimensions of extension . 9. When ... Page 41

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**surface**or portion of a circle , included between an arc and its chord . 5. A sector is the part of the circle included between an arc DE , and the two radii CD , CE , drawn to the extremities of the arc . 6. A straight line is said to ... Page 68

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**surface**of a figure , are terms very nearly synonymous . The area designates more particularly the super- ficial content of the figure . The area is expressed numeri- cally by the number of times which the figure contains 68 GEOMETRY ... Page 72

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**surface**; because , for one unit in height , there are as many superficial units as there are linear units in the base ; for two units in height twice as many ; for three units in height , three times as many , & c . Still this measure ... Page 73

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**surfaces**, the rectangle B would then have for its absolute measure , in other words , it would be equal to 4 of a super- ficial unit . It is more common and more simple , to assume the square as the unit of**surface**; and to se- lect ...### Other editions - View all

### Common terms and phrases

adjacent adjacent angles altitude angle ACB angle BAC ar.-comp base multiplied bisect Book centre chord circ circumference circumscribed common cone convex surface Cosine Cotang cylinder diagonal diameter dicular distance draw drawn equal angles equally distant equiangular equivalent figure formed four right angles frustum given angle given line gles greater homologous sides hypothenuse inscribed polygon intersection less Let ABC let fall logarithm measured by half number of sides oblique lines opposite parallelogram parallelopipedon pendicular perimeter perpen perpendicular plane MN polyedron polygon ABCDE prism proportional PROPOSITION pyramid quadrant quadrilateral quantities radii radius ratio rectangle regular polygon right angled triangle S-ABC Scholium secant secant line segment side BC similar sine solid angle solid described sphere spherical polygon spherical triangle square described straight line tang tangent THEOREM triangle ABC triangular prism vertex