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" The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds. "
An Elementary Treatise on Geometry: Simplified for Beginners Not Versed in ... - Page 136
by Francis Joseph Grund - 1834 - 190 pages
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A complete treatise on practical land-surveying

Anthony Nesbit - 1870 - 578 pages
...certain point within it, called the centre. 39. The circumference of every circle is supposed to be divided into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds. 40. The diameter of a circle is a right line...
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A Treatise on Plane and Spherical Trigonometry

Enoch Lewis - 1872 - 238 pages
...supplement. Thus BHD is the supplement of AB. 10. The circumference of every circle is supposed to be divided into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes; eafth minute into 60 equal parts, called seconds, &c. Degrees, minutes and seconds are designated thus,...
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An Elementary Geometry and Trigonometry

William Frothingham Bradbury - Geometry - 1872 - 262 pages
...of methods of computing plane angles and triangles. 17. The circumference of every circle is dividad into 360 equal parts, called degrees ( ° ), each degree into 60 equal parts, called minutes ( ' ), and each minute into 60 equal parts, called seconds ( " ). 18. As angles at the centre valy...
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High-school Astronomy

Hiram Mattison - 1872 - 264 pages
...sometimes called radiations or itldianr-6. All circles, whether great or small, are supposed to be divided into 360 equal parts, called degrees / each degree into 60 equal paits, called minutes; and each minute into 60 equal parts, called seconds. They are marked respectively...
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An Elementary Geometry and Trigonometry

William Frothingham Bradbury - Geometry - 1873 - 288 pages
...treats of methods of computing plane angles and triangles. П, The circumference of every circle is divided into 360 equal parts, called degrees ( ° ), each degree into 60 equal parts, called minutes ( ' ), and each minute into 60 equal parts, called seconds ( " ). I8« As angles at the centre vary...
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Elements of Plane and Spherical Trigonometry: With Practical Applications

Benjamin Greenleaf - Trigonometry - 1876 - 204 pages
...fixed upon as the unit of angular measure. For this purpose a right angle is generally divided into 90 equal parts called degrees, each degree into 60 equal parts called minutes, each minute into 60 equal parts called seconds ; then an angle is expressed by the number of degrees, minutes,...
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The Normal Higher Arithmetic: Designed for Common Schools, High Schools ...

Edward Brooks - Arithmetic - 1877 - 528 pages
...circumference is called a quadrant. 399. For the purpose of measuring angles, the circumference is divided into 360 equal parts, called degrees ; each...into 60 equal parts, called minutes ; each minute into 60 equal parts called seconds. 400. Any angle having its- vertex at the centre, is measured by...
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The New Normal Written Arithmetic: Designed for Common Schools, Normal ...

Edward Brooks - Arithmetic - 1877 - 438 pages
...circumference is called a quadrant. * 290. For the purpose of measuring angles, the circumference is divided into 360 equal parts, called degrees; each...degree into 60 equal parts, called minutes; each minute into 60 equal parts, called seconds. 2O1. Any angle having its vertex at the centre, is measured by...
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The New Normal Written Arithmetic: Designed for Common Schools, Normal ...

Edward Brooks - Arithmetic - 1877 - 444 pages
...circumference is called a quadrant. 290. For the purpose of measuring angles, the circumference is divided into 360 equal parts, called degrees ; each...degree into 60 equal parts, called minutes; each minute into GO equal parts, called seconds. 291. Any angle having its vertex at the centre, is measured by...
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The Normal Union Arithmetic: Graded Course, Volume 2

Edward Brooks - Arithmetic - 1877 - 250 pages
...circumference is called a quadrant. , 290. For the purpose of measuring angles, the circumference is divided into 360 equal parts, called degrees ; each...degree into 60 equal parts, called minutes; each minute into 60 equal parts, called seconds. 291. Any angle having its vertex at the centre, is measured by...
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