Books Books
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 : 16. And this point is called the centre...
Mensuration of lines, areas, surfaces, and volumes - Page xiii
by Robert Rawson - 1856

## National Arithmetic; Oral and Written: For Common and Graded Schools ...

Joseph Ficklin - Arithmetic - 1881 - 406 pages
...points of which are equally distant from a point within, called the Centre. The Diameter of a sphere is a straight line drawn through the centre, and terminated both ways by the surface. The Radius of a sphere is a straight line drawn from the centre to the surface. 633. The Volume...

## Class lessons on Euclid

Marianne Nops - 1882 - 278 pages
...of a wheel, which each resembles). 16. ' And this point is called the centre of the circle.' 17. ' A diameter of a circle is a straight line drawn through...centre and terminated both ways by the circumference ' (equal in length to two radii). 1S. ' A semicircle is the figure contained by a diameter, and that...

## The Elements of Plane and Solid Geometry: With Chapters on Mensuration and ...

Isaac Sharpless - Geometry - 1882 - 292 pages
...lines are called radii, and this point is the centre of the circle. 32. A diameter of a circle is any straight line drawn through the centre, and terminated both ways by the circumference. 33. A semicircle is the figure contained by the diameter and the part of the circumference cut off...

## Syllabus of plane geometry, books 1-3, corresponding to Euclid, books 1-4 ...

Mathematical association - 1883 - 86 pages
...DEF. 9. A radius of a circle is a straight line drawn from the centre to the circumference. DEF. 10. A diameter of a circle is a straight line drawn through...centre and terminated both ways by the circumference. [An angle is a simple concept incapable of definition, properly so called, but the nature of the concept...

## Geometry for schools, comprising books i. and ii. of Euclid, with some ...

Euclides - 1883 - 176 pages
...; and, from the definition of a circle, radii of the same circle are all equal to one another. 13. A diameter of a circle is a straight line drawn through...centre, and terminated both ways by the circumference. 14. A semicircle is the figure enclosed by a diameter and the part of the circumference cut off by...

## Mensuration for beginners [With] Answers

William Dodds - 1883 - 202 pages
...line drawn from the centre to the circumference. 0 A is a radius ; 0 D and 0 G are also radii. 98. A diameter of a circle is a straight line drawn through...centre and terminated both ways by the circumference. A 0 is a diameter. The diameter is of course twice the length of tlio radius. The circumference is...

## The Elements of Euclid, books i. to vi., with deductions, appendices and ...

Euclides - 1884 - 434 pages
...line drawn from the centre to the circumference. Thus OA, OB, OC, &c. are radii of the circle ACF. 18. A diameter of a circle is a straight line drawn through...centre, and terminated both ways by the circumference. Thus in the preceding figure BF is a diameter of the circle ACF. RECTILINEAL FIGURES. 19. Rectilineal...

## The Elements of Plane Geometry ...

Association for the improvement of geometrical teaching - Geometry, Modern - 1884 - 150 pages
...DEF. 42. A radius of a circle is a straight line drawn from the centre to the circumference. DEF. 43. A diameter of a circle is a straight line drawn through...centre and terminated both ways by the circumference. It follows from the definition of a circle that a point is within * NOTE. — Euclid restricts the...