Books Books 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. First lessons in Plane Geometry. Together with an application of them to the ... - Page 173
by Francis Joseph Grund - 1830 - 12 pages ## 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... ## The Yachtsman's Handybook for Sea Use: And Adapted for the Board of Trade ...

William Henry Rosser - 1877 - 158 pages
...any portion (long or short) of the circumference, as AF, or B r. 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; which are respectively marked ° ' ". (See p. 1,... ## The Elementary Arithmetic: Oral and Written

Albert Newton Raub - Arithmetic - 1877 - 176 pages
...the centre and limited by the circumference, as AD, is called a Diameter. 129. Every circumference 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. TABLE. 60 seconds ( " ) =1 minute, ( ' ). 60 minutes... ## Scientific and practical geometry for self-instruction

Rolla Rouse - 1879 - 402 pages
...(B 27, abdc). 20. For comparing the arc of an angle with a circumference, the latter is taken 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 ; a right angle containing 90 degrees, and a semicircle... ## Colton's Common School Geography: Illustrated by Numerous Engravings and ...

Joseph Hutchins Colton - Geography - 1880 - 152 pages
...unequal parts. 4. For the purpose of measurement, every circle is conceived to be divided into 3(30 equal parts called Degrees ; each degree, into 60 equal parts called minutes; and each minute, into GO equal parts called Seconds. Degrees are marked °, minutes ', seconds ''.... ## Introductory Modern Geometry of Point, Ray, and Circle

William Benjamin Smith - Geometry, Modern - 1892 - 314 pages
...straight angle? In a right angle ? HISTORICAL NOTE. — For purposes of computation the round angle is divided into 360 equal parts called degrees, each degree into 60 equal minutes (partes minutes primae), each minute into 60 equal seconds (partes minutse secundci), denoted... ## Introductory Modern Geometry of Point, Ray, and Circle

William Benjamin Smith - Geometry, Modern - 1892 - 160 pages
...straight angle? In a right angle ? HISTORICAL NOTE. — For purposes of computation the round angle is divided into 360 equal parts called degrees, each degree into 60 equal minutes (partes minutce primae), each minute into 60 equal seconds (partes minutae secunJiz), denoted... ## Introductory Modern Geometry of Point, Ray, and Circle

William Benjamin Smith - Geometry, Modern - 1893 - 330 pages
...straight angle? In a right angle ? HISTORICAL NOTE. — For purposes of computation the round angle is divided into 360 equal parts called degrees, each degree into 60 equal minutes (partes minutte primse), each minute into 60 equal seconds (partes minutse secundtz), denoted... ## The Elementary Arithmetic: Oral and Written

Albert Newton Raub - Arithmetic - 1894 - 200 pages
...the centre and limited by the circumference, as AD, is called a Diameter. 129. Every circumference 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. TABLE. 60 seconds (") =1 minute, (' ). 60 minutes... 