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

## Pure mathematics, Volume 1

Edward Atkins - 1874 - 424 pages
...any straight line drawn from the centre to the circumference is called a radius of the circle]. 1 7. A diameter of a circle is a straight line drawn through...centre, and terminated both ways by the circumference. 18. A semicircle is the figure contained by a diameter and the part of the circumference cut off by...

## The Elements of Euclid, containing the first six books, with a selection of ...

Euclides - 1874 - 342 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...centre and terminated both ways by the circumference. 18. A semicircle is the figure contained by a diameter, and the part of the circumference cut off by...

## Euclid's Elements of Geometry: Chiefly from the Text of Dr. Simson, with ...

Robert Potts - Geometry, Plane - 1876 - 446 pages
...the center of the circle. xvn. A diameter of a circle is a straight line drawn through the center, and terminated both ways by the circumference. . •...semicircle is the figure contained by a diameter and the part *f the circumference cut on by the diameter. XIX. The center of a semicircle is the same with...

## Syllabus of Plane Geometry: (corresponding to Euclid, Books I-VI) ...

...9. A radius of a circle is a straight line drawn from the centre to the circumference. DEF. io. h. 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...

## Elements of geometry, based on Euclid, books i-iii

Edward Atkins - 1876 - 130 pages
...l,raight line drawn from the centre to tho circuiufeivace "I a radius of the circle]. 1 7. A cliaittetcr of a 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 cut off by...

## Elements of geometry, based on Euclid, book i

Edward Atkins - 1877 - 72 pages
...any straight line drawn from the centre to the circumference is called a radius of the circle]. 1 7. A diameter of a circle is a straight line drawn through...centre, and terminated both ways by the circumference. 18. A semicircle is the figure contained by a diameter and the part of the circumference cut off by...

## Natural philosophy for beginners

Isaac Todhunter - 1877 - 442 pages
...of the circle. A radius of a circle is a straight line drawn from the centre to the circumference. A diameter of a circle is a straight line drawn through...centre and terminated both ways by the circumference. An arc of a circle is any part of the circumference. 20. In Arts. 15. ..19 we have spoken of certain...

## Natural Philosophy for Beginners: With Numerous Examples, Part 1

Isaac Todhunter - Philosophy - 1877 - 452 pages
...radius of a sphere is a straight line drawn from the centre to the surface. A diameter of a sphere is a straight line drawn through the centre and terminated both ways by the surface. A sphere is sometimes called a globe : marbles and billiard balls are familiar examples of...