| Benjamin Greenleaf - 1841 - 334 pages
...equilangular, when all its angles are equal. When both these are equal, it is a regular figure. 44 A circle is **a plane figure, bounded by a curve line, called the...which is every where equidistant from a certain point,** called its centre. The circumference itself is often called a circle, and also the periphery. 45. The... | |
| Charles Guilford Burnham - 1841 - 324 pages
...which is called the centre. 11. The circumference, or periphery of a circle, is the bounding line. 12. **The radius of a circle is a line drawn from the centre to the circumference.** Therefore, all radii of the same circle are equal. 13. The diameter of a circle is a right line drawn... | |
| William Grier - 1842 - 320 pages
...equiangular when all its angles are equal. When both these are equal, it is a regular figure. 45. A Circle is **a plane figure bounded by a curve line, called the Circumference, which is** everywhere equidistant from a certain point within, called its Centre. The circumference itself is... | |
| Charles Haynes Haswell - 1844 - 298 pages
...joining the extremities of an arc. A Segment of a circle is any part bounded by an arc and its chord. **The Radius of a circle is a line drawn from the centre to the circumference.** A Sector is any part of a circle bounded by an arc and its two radii. A Semicircle is half a circle.... | |
| Peter Nicholson - 1845 - 430 pages
...square is one of the four ; the former being called a trigon, and the latter a tetragon. A circle is **a plane figure, bounded by a curve line, called the...within, called its centre. The radius of a circle is a** right line drawn from the centre to the circumference. A diameter of a circle is a right line, drawn... | |
| Robert Griffith Hatfield - 1845 - 326 pages
...dodecagon twelve sides. Fig. 17. Fig. 18. Fig. 19. Fig. 20. 47.— A circle is a figure bounded by a curved **line, called the circumference ; which is every where...from a certain point within, called its centre. The** circumference is also called the periphery, and sometimes the circle. 48. — The radius of a circle... | |
| Joseph Guy - 1845 - 370 pages
...investigation of the causes of their motions, &c. A Circle is a plain figure, bounded by a uniform **curve line, called the circumference, which is every...equidistant from a certain point within, called its centre,** as ABCD (pi. 1. fig. 1.) The circumference itself is often called a circle, and also the peri phery.... | |
| Anna Cabot Lowell - 1846 - 122 pages
...circle ? A circle is a plain figure, bounded by a uniform curve line. What is the radius of a circle 1 **The radius of a circle, is a line drawn from the centre to the circumference.** What is the diameter of a circle ? A line drawn through the centre, and terminated at both ends by... | |
| William Vogdes - 1847 - 324 pages
...any portion of the circumference. 32. A semicircle is half, and a quadrant, quarter of a circle. 33. **The radius of a circle is a line drawn from the centre to the circumference.** 34. The diameter of a circle, is a right line drawn through the centre, terminated both ways by the... | |
| Peter Nicholson, Joseph Gwilt - 1848 - 750 pages
...square is one of four ; the former being caUed a trigon, and the latter a tetragon. 42. A circle is **a plane figure, bounded by a curve line, called the circumference, which is** everywhere equidistant from a certain point within it, called its centre. PLATE 3. 43. The radius of... | |
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