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The angle at the centre of a circle is double of the angle at the circumference upon the same base, that is, upon the same part of the circumference.
A Treatise on Surveying, Containing the Theory and Practice: To which is ... - Page 43
by John Gummere - 1814 - 346 pages

## The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ...

Robert Simson - Trigonometry - 1762 - 466 pages
...is in CA. Therefore if a ftraight line, &c. Q^ED PROP. XX. THE OR. See x. HPH E angle at the center of a circle is double of the , . angle at the circumference, upon the fame bafe, tha,t is, upon the fame part qf.the circumference, aji B ' Let ABC be a circle, and BEC...

## The First Six Books: Together with the Eleventh and Twelfth

Euclid - 1781 - 520 pages
...; that is, the centre is in CA. Therefore, if a ftraight line, &c. D. D PROP. XX. THEO R. THE nngle at the centre of a circle is double of the angle at the circumference, upon the fame bafe, that is, upon the fame part of the circumference. Let B t. b 32. t. Let ABC be a circle,...

## The Elements of Euclid: Viz. the First Six Books, with the Eleventh and ...

Alexander Ingram - Trigonometry - 1799 - 351 pages
...; that is, the centre is in CA. Therefore, if a ftraight line, &.c. Q^ ED a is. 3. PROP. XX. THEOR. THE angle at the centre of a circle is double of the angle at the circumference, upon the fame bafe, that is, upon the fame part of the circumference. Let ABC be a circle, and BDC an angle...

## Elements of the Philosophy of the Human Mind

Dugald Stewart - Logic - 1802 - 587 pages
...different quantities, and the connexions which exifl between different relations. When we demonftrate, that the angle at the centre of a circle is double of the angle at the circumference on the fame bafe, we afcertain a relation between two quantities. When we demonftrate, that triangles...

## Elements of Geometry;: Containing the First Six Books of Euclid, with a ...

John Playfair - Euclid's Elements - 1804 - 470 pages
...the centre ; that is, the centre is in CA. Therefore, if a flraight line, &.c. Q^ED PROP. XX. THE OR. THE angle at the centre of a circle is double of the angle at the circumference, upon the fame bafe, that is, upon the fame part of the circumference. Let ABC be a circle, and BDC an angle...

## The Elements of Euclid: Also the Book of Euclid's Data ...cor. viz. The ...

Robert Simson - Trigonometry - 1804
...center is in CA. Therefore if a ftraight line, &c. £>._£. D. PROP. XX. THEOR. THE angle at the center of a circle is double of the angle at the circumference, upon the fame bafe, that is, upon the fame part of the circumference. SecN. a. Sb. 32. I. Let ABC be a circle,...

## Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - Euclid's Elements - 1806 - 311 pages
...is, the centre is in CA. Therefore, if a straight line, &c. QED B PROP. XX. THEOR. a 5 1. b 32. 1. THE angle at the centre of a circle is double of the...that is, upon the same part of the circumference. Let ABC be a circle, and BDC an angle at the centre, and BAG an angle at the circumference, which have...

## The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ...

Robert Simson - Trigonometry - 1806 - 518 pages
...centre ; that is, fore, if a straight line, &c. QB the centre is in CA. ED PROP. XX. THEOR. s«« N. THE angle at the centre of a circle is double of the...that is, upon the same part of the circumference. B a 5.1. b33. Let ABC be a circle, and BEC an angle at the centre, and Book III. BAC an angle at the...