 | Thomas Aloysius O'Donahue - Mine surveying - 1896 - 186 pages
...which has all its sides equal, and its angles equal. A circle is a plane figure contained or bounded by one line, which is called the circumference, and is such that all straight lines from a certain point within the figure to the circumference are equal to one another. This point is... | |
 | John Thornton - Physical geography - 1899 - 460 pages
...from a plane. The intersection of two planes is a straight line. A circle is a plane figure bounded by one line, which is called the circumference, and is such that all straight lines drawn from its centre (radii) to the circumference are equal. A sphere, or globe, is a round body bounded... | |
 | Euclid, Henry Sinclair Hall, Frederick Haller Stevens - Euclid's Elements - 1900 - 330 pages
...figure. Two figures are said to be equal in area when they enclose equal portions of a plane surface. 15. A circle is a plane figure contained by one line,...circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference are equal to one another; this point is... | |
 | G. F. Burn - Geometry - 1903 - 272 pages
...its sides. The periphery is the boundary line of a circle or curved figure. Adjacent means adjoining. A circle is a plane figure contained by one line,...circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another. And this point... | |
 | Association for the Improvement of Geometrical Teaching - 1903 - 342 pages
...intercepted between perpendiculars let fall on it from the extremities of the former. DEF. 41. A circlets a plane figure contained by one line, which is called the circumference, and is suck that all straight lines drawn from a certain point within the figure to the circumference are... | |
 | Euclid - Euclid's Elements - 1904 - 488 pages
...Two figures are said to be equal in area when they enclose equal fj? portions of a plane surface. 15. A circle is a plane figure contained by one line,...circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference are equal to one another ; this point is... | |
 | William Hughes - 1908 - 942 pages
...the extremity of anything, and a Figure is that which is enclosed by one or more boundaries. Hence A Circle is a plane figure contained by one line, which is called the circumference, and is such thai all straight lines drawn from a certain point within the figure to the circumference are equal... | |
 | William Hughes - 1910 - 934 pages
...the extremity of anything, and a Figure is that which is enclosed by one or more boundaries. Hence A Circle is a plane figure contained by one line,...circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference are equal to one another. This point is... | |
 | David Allan Low - Geometrical drawing - 1912 - 468 pages
...term " line " is used it generally stands for " straight line." 2. The Circle — Definitions. — A circle is a plane figure contained by one line,...circumference, and is such, that all straight lines drawn from a certain point within the figure to the circumference are equal to one another : and this point... | |
 | Frederick Converse Beach, George Edwin Rines - Encyclopedias and dictionaries - 1912 - 916 pages
...Apus, Musca, Centaurus , Lupus, Norma, and Triangulum Australe. Circle, in geometry, a plane ligure contained by one line, which is called the "circumference" and is such that all straight lines drawn from a certain point (the "centre") within the figure to the circumference are equal to one another.... | |
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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. 
