| Isaac Todhunter - Spherical trigonometry - 1863 - 182 pages
...the sphere. The straight line which joins any point of the surface with the centre is called a radiw. **A straight line drawn through the centre and terminated both ways by the** surface is called a diameter. 2. The section of the surface of a sphere made by any plane is a circle.... | |
| Euclides - 1864 - 448 pages
...is a straight line drawn through the center, and terminated both ways by the circumference. XVIII. **A semicircle is the figure contained by a diameter...part of the circumference cut off by the diameter.** XIX. The center of a semicircle is the same with that of the circle. XX. Rectilineal figures are those... | |
| Robert Potts - 1865 - 528 pages
...circle is a straight line drawn through the center, and terminated both ways by the circumference. xvm. **A semicircle is the figure contained by a diameter...part of the circumference cut off by the diameter.** XIX. The center of a semicircle is the same with that of the circle. XX. Rectilineal figures are those... | |
| Euclides - 1865 - 80 pages
...the radii of the same circle are equal, for each of them is equal to the radiant. 35. The DIAMETER **of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.** 36. An ARC of a circle is any part of the circumference. 37. Magnitudes which coincide the whole of... | |
| Euclides - 1865 - 402 pages
...are equal to one another. XVI. And this point is called the centre of the circl*. XVII. A diameter **of a circle is a straight line drawn through the centre, and terminated both ways by the** circum/ ference. NB — When several angles are at one point B, any one of them is expressed by three... | |
| William Harris Johnston - 1865 - 478 pages
...joining the two extremities of the arc. A semi-circle or half circle, is the figure contained by the **diameter and the part of the circumference cut off by the diameter,** as DAP, or D С P. A quadrant, as AED, is the figure contained by two radii which are perpendicular... | |
| Edward Clarke Lowe - 1866 - 172 pages
...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 drawn through the centre,...contained by a diameter and the part of the circumference** it cuts off. 19. A segment of a circle is the figure contained by a straight line and the part of the... | |
| Leroy J. Blinn - Sheet-metal work - 1866 - 216 pages
...circle is a Straight line drawn from the centre to the circumference, as BD, fig. 7. 4. The diameter **of a circle is a Straight line drawn through the centre and terminated both ways** at the circumference, as ABC. 5. A chord is a Straight line joining any two points of the circumference,... | |
| Isaac Todhunter - Euclid's Elements - 1867 - 426 pages
...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 drawn through the centre, and terminated both ways by the circumference.** [A radius of a circle is a straight line drawn from the centre to the circumference.] 18. A semicircle... | |
| Gerardus Beekman Docharty - Geometry - 1867 - 474 pages
...a straight line drawn from the centre to any point on the surface. The diameter or axis of a sphere **is a straight line drawn through the centre, and terminated both ways by the** surface. It appears from Definition 1 that all the radii of the same sphere are equal, and that all... | |
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