 | Euclides - 1863 - 74 pages
...radius, (radius, the spoke of a wheel), 18. A semicircle (semi, half), is the figure contained by the diameter and the part of the circumference cut off by the diameter; as ADBCA. The Semicircle divided into 180 equal parts, for the Protractor, as it is called when the... | |
 | 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...lines. XXII. Quadrilateral, by four straight lines. XXIII. Multilateral figures, or polygons, by more than four straight lines. XXIV. Of three-sided figures,... | |
 | Euclides - 1864 - 262 pages
...circle is a straight line drawn through the center, and terminated both ways by the circumference. XVHI. A semicircle is the figure contained by a diameter...lines. XXII. Quadrilateral, by four straight lines. XXIII. Multilateral figures, or polygons, by more than four straight lines. XXIV. Of three-sided figures,... | |
 | Robert Potts - 1865 - 528 pages
...called a perpendicular to it. XI. An obtuse angle is that which is greater than a right angle. xn. An acute angle is that which is less than a right...Trilateral figures, or triangles, by three straight lines. xxn. Quadrilateral, by four straight lines. xxrn. Multilateral figures, or polygons, by more than four... | |
 | Euclides - 1865 - 402 pages
...is called a perpendicular to it. An obtuse angle is that which is greater than a right angle. XVIII. A semicircle is the figure contained by a diameter...of the circumference cut off by the diameter. XIX. A segment of a circle is the figure contained by a straight line, and the circumference it cuts off.... | |
 | 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 ะก P. A quadrant, as AED, is the figure contained by two radii which are perpendicular... | |
 | Edward Clarke Lowe - 1866 - 172 pages
...circle is a straight line drawn through the centre, and terminated both ways by the circumference. 18. A semicircle is the figure 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... | |
 | Euclid, Isaac Todhunter - Euclid's Elements - 1867 - 426 pages
...circumference. [A radius of a circle is a straight line drawn from the centre to the circumference.] 18. A semicircle is the figure contained by a diameter...part of the circumference cut off by the diameter. 19. A segment of a circle is the figure contained by a straight line and the circumference which it... | |
 | Robert Potts - 1868 - 434 pages
...circle is a straight line drawn through the center, and terminated both ways by the circumference. XVIIL A semicircle is the figure contained by a diameter and the part of the circumference cut on' by the diameter. XIX. The center of a semicircle is the same with that of the circle. XX. Rectilineal... | |
 | Euclides - 1871 - 136 pages
...circle, and the straight line AOD is a Diameter. Henco the radius of a circle is half the diameter. XVI. A SEMICIRCLE is the figure contained by a diameter...part of the circumference cut off by the diameter. XVII. RECTILINEAR figures are those which are contained by straight lines. The PERIMETER (or Periphery)... | |
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A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference. 
