 | J. M. Scribner - Mechanical engineering - 1849 - 286 pages
...revolution of an ellipse about either of its axes. 6. A sphere is a solid, terminated by a curved surface, all the points of which are equally distant from a point within, called the center. A sphere may be described by the revolution of a semicircle about a diameter. 7. A radius... | |
 | James Bates Thomson - Arithmetic - 1850 - 352 pages
...diameter is given. (Leg. Y. 11. Sch.) Multiply the given diameter by 3.14159. Note. — The.circumferenee of a circle is a curve line, all the points of which...distant from a point within, called the centre. The diameter of a circle is a straight line which passes through the centre, and is terminated on both... | |
 | Charles Davies - Geometry - 1850 - 238 pages
...an acute angle. 23. An obtuse angle is greater than a right angle. Thus, DBC is an obtuse angle. 24. The circumference of a circle is a curve line all the points of which are equally distant from a certain point within called the centre. Thus, if all the points of the curve AEB are equally distant... | |
 | Charles Davies - Geometry - 1850 - 218 pages
...the diagonals of a rhombus bisect each other at right angles. BOOK II, OF THE CIRCLE, DEFINITIONS. 1. THE circumference of a circle is a curve line, all the points of which are equally distant from a certain point within called the centre. 2. The circle is the space bounded by this curve line. 3. Every... | |
 | Anna Cabot Lowell - Astronomy - 1850 - 412 pages
...of a Planet. Sidereal and Apparent Time. § 1. A sphere is a solid terminated by a curved surface, all the points of which are equally distant from a point within called the centre. The radius of a sphere is a straight line drawn from the centre to a point in the surface ; the diameter,... | |
 | George Roberts Perkins - Geometry - 1850 - 332 pages
...prism; hence they will be their lines of contact. 7. A sphere is a solid terminated by a curve surface, all the points of which are equally distant from a point within, called the centre. The sphere m-ay be conceived to be generated by the revolution of a semicircle DAE about its diameter DE;... | |
 | Adrien Marie Legendre - Geometry - 1852 - 436 pages
...said to be circumscribed about the pyramid. 9. The SPHERE is a solid terminated by a curved surface, all the points of which are equally distant from a point within, called the centre. The sphere may be generated by the revolution of a semicircle DAE, about its diameter DE : for, the surface... | |
 | Charles Davies - Geometry - 1886 - 340 pages
...DBC is an acute angle23 An obtuse angle is greater than a right angle- Thus, DBC is an obtuse angle24 The circumference of a circle is a curve line all the points of which arc equally distant from a certain point within called the centre, Thus, if all the points of the curve... | |
 | Charles Davies - Geometry - 1854 - 436 pages
...said to be circumscribed about the pyramid. 9. The SPHERE is a solid terminated by a curved surface, all the points of which are equally distant from a point within, called the centre. The sphere may be generated by the revolution of a semicircle DAE, about its diameter DE : for, the surface... | |
 | James Bates Thomson - Arithmetic - 1855 - 436 pages
...circumference of a circle from its diameter. Multiply tlie diameter by 3.14159. (Leg. V. 11. Sch.) Note. — The circumference of a circle is a curve line, all...distant from a point within, called the centre. The diameter of a circle is a straight line which passes through the centre, and is terminated on Both... | |
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CIRCLE is a plane figure bounded by a curved line, all the points of which are equally distant from a point within called the centre; as the figure ADB E. 
