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And this point is called the centre of the circle, [and any straight line drawn from the centre to the circumference is called a radius of the circle].
Easy Lessons in Geography and History: Designed for the Use of the Younger ... - Page 11
by Joseph Allen - 1832 - 116 pages
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## Pure mathematics, Volume 1

Edward Atkins - 1874 - 424 pages
...within the figure to the circumference are equal to one another. 16. And this point is called the centre of the circle, [and 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 the centre,...
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## Elements of geometry, based on Euclid, book i

Edward Atkins - 1877 - 72 pages
...within the figure to the circumference are equal to one another. 16. And this point is called the centre of the circle, [and 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 the centre,...
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## Lessons on form, for teachers [of geometry].

Richard Pears Wright - 1882 - 136 pages
...circle as the space enclosed by this circumference and the fixed point as the centre of the circle. 128. Any straight line drawn from the centre to the circumference is a radius. Two or more such straight lines are termed radii. It follows from the definition of a circumference...
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## Constructive Form Work: An Introduction to Geometry for Grammar Grades

William Nicholas Hailmann - Geometry - 1901 - 88 pages
...of a circle is a point within the circle equally distant from all points of the circumference. 4. A straight line drawn from the centre to the circumference is a radius of the circle. 5. The diameter of a circle is a straight line drawn from any point in its circumference,...
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## The Elements of Plane Geometry

Euclid - 1845 - 328 pages
...it are equal. The bounding curve is called the circumference, the point within it the centre, every straight line drawn from the centre to the ' circumference is a radius, and every straight line drawn through the centre and terminated by the circumference is a diameter....
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## A First Course of Geometry

130 pages
...equal. The bounding curve is the circumference of the circle, the point within it the centre, and every straight line drawn from the centre to the circumference is a radius. DBF. 22. The straight line which joins two points on the circumference of a circle is called a chord....
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