 | Charles William Hackley - 1847 - 248 pàgines
...also a pole, the arcs Np,, &c., being supplements of the arcs Zp,, &c. Def. The diameter of the sphere perpendicular to the plane of a circle is called the axis of that circle. Cor. 1. Every arc P,Z, drawn from a point in the circumference of a great circle to its pole, is a... | |
 | Sir Edward James Reed, Joseph Woolley - 1872 - 570 pàgines
...of a sphere have the same radius. All great circles bisect each other. DBF. The extremities of that diameter of a sphere which is perpendicular to the plane of a circle are called the poles of that circle. In the case of a small circle the poles are distinguished as the... | |
 | Thomas Liddell Ainsley - 1875 - 416 pàgines
...other circles are called small circles. Navigation — Definitions. 83 n/. The extremities of that diameter of a sphere which is perpendicular to the plane of a circle are called the poles of that circle. In the case of a small circle, the poles are distinguished as... | |
 | Andrew Wheeler Phillips, Irving Fisher - 1896 - 554 pàgines
...semi-circumference, joining them. Thus the distance between the points A and B is the arc AEB. 813. Def. — The diameter of a sphere which is perpendicular to the plane of a circle of the sphere is called the axis of that circle. 816, Def. — The poles of a circle are the extremities... | |
 | Andrew Wheeler Phillips, Irving Fisher - 1897 - 376 pàgines
...semi-circumference, joining them. Thus the distance between the points A and B is the arc AEB. 743. Def. — The diameter of a sphere which is perpendicular to the plane of a circle of the sphere is the axis of that circle. 744. Def.— The poles of a circle are the extremities of... | |
 | Andrew Wheeler Phillips, Irving Fisher - 1897 - 374 pàgines
...semi-circumference, joining them. Thus the distance between the points A and B is the arc AEB. 743. Def.—The diameter of a sphere which is perpendicular to the plane of a circle of the sphere is the axis of that circle. PROPOSITION VI. THEOREM 745. All points on the circumference... | |
 | Fletcher Durell - 1904 - 232 pàgines
...plane does not pass through the center of the sphere. 743. DEF. The axis of a circle of a sphere is the diameter of a sphere which is perpendicular to the plane of the circle. Thus, on figure p. 426, BB' is the axis of PCD. 745. Properties of circles of a sphere... | |
 | Fletcher Durell - 1911 - 553 pàgines
...plane does not pass through the center of the sphere. 743. DEF. The axis of a circle of a sphere is the diameter of a sphere which is perpendicular to the plane of the circle. Thus, on figure p. 426, BBf is the axis of PCD, 745. Properties of circles of a sphere... | |
 | John Charles Stone, James Franklin Millis - 1916 - 196 pàgines
...circle. The poles of a circle of a sphere are the extremities of the axis of the circle. Thus, if AB is the. diameter of a sphere which is perpendicular to the plane of a circle of the sphere at C, AB is the axis of the circle and A and B are its poles. It follows from the proof... | |
 | John H. Williams, Kenneth P. Williams - 1916 - 184 pàgines
...which does not pass through the center of the sphere is called a small circle. The diameter of a sphere perpendicular to the plane of a circle is called the axis of the circle, and its extremities are called the poles of the circle. 699. COB. 4. (1) Any great circle... | |
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The extremities of that diameter of a sphere which is perpendicular to the plane of a circle are called the poles of that circle. 
