 A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another.  The Elements of Plane Geometry ... - 70 ページAssociation for the improvement of geometrical teaching 著 - 1884全文表示 - この書籍について
 | John Bradley Harbord - 1865 - 52 ページ
...of Navigation.' CHAPTER II. DEFINITIONS. THE SPHERE. A Sphere : A figure bounded by a curved surface such that all straight lines drawn from a certain point within the figure to the surface are equal to one another : this point is called the Centre of the Sphere. Great Circles of... | |
 | John Playfair - 1855 - 350 ページ
...contained in a figure, without any reference to the nature of the line or lines which bound it. 11. A circle is a plane figure contained by one line,...the figure to the circumference, are equal to one .mother and are called radii 12. And this point is called the centre of the circle. 13. A diameter... | |
 | Walter Marsham Adams - 1866 - 114 ページ
...Circle; and secondly, to examine some of the various parts of these figures.. " A Circle," says Euclid, " is a plane figure contained by one line, which is...figure to the circumference are equal to one another. And this point is called the centre of the circle " (1.) (AB=AP.) The definitions correspond exactly.... | |
 | Edward Clarke Lowe - 1866 - 172 ページ
...which is enclosed by one or more boundaries. 15. A circle is a plane figure contained (or bounded) by one line, which is called the circumference, and...figure to the circumference are equal to one another. 1C. And this point is called the centre of the circle. 17. A diameter of a circle is a straight line... | |
 | Edward Thomas Stevens - 1866 - 434 ページ
...product is the area. DD THE CIRCLE. Definition : — A circle J8 a plane figure bounded by one line called the circumference, and is such that all straight lines drawn from, a certain point within the circle to the circumference are equal to one another. This point is called the centre of the circle.... | |
 | Euclid, Isaac Todhunter - 1867 - 426 ページ
...is the extremity of any thing. 14. A figure is that which is enclosed by one or more boundaries. 15. A circle is a plane figure contained by one line,...figure to the circumference are equal to one another : 16. And this point is called the centre of the circle. 17. A diameter of a circle is a straight line... | |
 | Robert Potts - 1868 - 434 ページ
...which is less than a right angle. XTTI. A term or boundary is the extremity of any thing. xrv. XV. A circle is a plane figure contained by one line,...all straight lines drawn from a certain point within tie figure to the circumference, are equal to one another. XVI. And this point is called the center... | |
 | Euclides - 1871 - 136 ページ
...is less than a right angle. XII. A FIGURE is that which is enclosed by one or -ore boundaries. XIII. A CIRCLE is a plane figure contained by one line,...CIRCUMFERENCE, and is such, that all straight lines drawn to the circumference from a certain point (called the CENTRE) within the figure are eqxial to one another.... | |
 | 1871 - 800 ページ
...Euclid and Montucla have written in vain. According to their definition, the circumference of a circle 'is such, that all straight lines drawn from a certain point within the figure ,' etc. How in the world could such a point be otherwise than ' within the figure?' IB there any such... | |
 | Euclides, James Hamblin Smith - 1872 - 376 ページ
...less than a right angle. XII. A FIGURE is that which is enclosed by one or •'ore boundaries. XIII. A CIRCLE is a plane figure contained by one line,...CIRCUMFERENCE, and is such, that all straight lines drawn to the circumference from a certain point (called the CENTRE) within the figure are equal to one another.... | |
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