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" ... 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 of the circle. "
A Series on Elementary and Higher Geometry, Trigonometry, and Mensuration ... - Page 197
by Nathan Scholfield - 1845
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Euclid's Elements [book 1-6] with corrections, by J.R. Young

Euclides - 1838 - 264 pages
...no necessity to alter the phraseology of the work in this respect. XIV. A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference. XV. A semicircle is the figure contained by a diameter, and the part of the circumference...
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The Elements of Euclid; viz. the first six books,together with the eleventh ...

Euclides - Geometry - 1841 - 378 pages
...another. XVI. And this point is called the centre of the circle. XVII. A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference. XVIII. A semicircle is the figure contained by a diameter and the part of the circumference...
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Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - Euclid's Elements - 1842 - 332 pages
...one another . 12. And this point is called the centre of the circle. 13. A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference. 14. A semicircle is the figure contained by a diameter and the part of the circumference...
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Elements of geometry: consisting of the first four,and the sixth, books of ...

Euclides - 1842 - 316 pages
...to one another. XVL This point is called the centre of the circle. XVII, A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference. A semidiameter of a circle is now usually called the radius. XVIII. A semicircle is...
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A course of practical geometry for mechanics

William Pease - Geometry - 1843 - 80 pages
...degree of longitude, depends upon its distance from the equator. XVII. A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference. XVIII. A semicircle is the figure contained by a diameter and the part of the circumference...
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Lectures on the Principles of Demonstrative Mathematics

Philip Kelland - Algebra - 1843 - 168 pages
...inconsistent with the Elements to adopt it in the former case too. • 14. A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference. Euclid adds, " which divides the circle into two equal parts. " This addition is in...
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Higher Geometry and Trigonometry: Being the Third Part of a Series on ...

Nathan Scholfield - Conic sections - 1845 - 244 pages
...two opposite and similar hyperbolas QA#, Q/a?', which in this case are called opposite hyperbolas. 3. If a straight line be drawn joining the foci, and...4. The distance from the centre to either focus is sailed the eccentricity. 5. Any straight line drawn through the centre, and terminated by two opposite...
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Elements of plane (solid) geometry (Higher geometry) and trigonometry (and ...

Nathan Scholfield - 1845 - 894 pages
...P,, P,, P3, Join S,P,, H,P,; S,P2, HP, ; S.P3, H,P3; then, SP, + HP, = SP, + HP, = SR. + HP, = 3. It' a straight line be drawn joining the foci and bisected, the point of bisection is called the-cen<re. 4. The distance from the centre to either focus is called the eccentricity. 5. Any straight...
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Euclid's Elements of geometry [book 1-6, 11,12] with explanatory notes ...

Euclides - 1845 - 546 pages
...another. XVI. And this point is called the centre of the circle. XVII. A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference. XVIII. A semicircle is the figure contained by a diameter and the part of the circumference...
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A system of practical mathematics; being no.xvi. of a new series of school-books

Scottish school-book assoc - 1845 - 444 pages
...are equal to one another; 15. And this point is called the centre. 16. The diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference. ' 17- A semicircle is the figure contained by a diameter and the part of the circumference...
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