...12.64 feet ? Ans. 553.63+ sq. ft. CIRCLES. 418. A Circle is a plane figure bounded by a curved line, all the points of which are equally distant from a point within, called the center. The CIRCUMFERENCE is the bounding line ; as the line AEB D. The DIAMETER is any straight...

...AND THE MEASURE OF ANGLES. 85. Definitions. The circumference of a circle is a curved Zme, all tlie points of which are equally distant from a point within, called the centre. The circle is the apace terminated by this curved line. Diameter, Inscribed Lines. line, as AB, ./2C, JID...

...cone, to pass a plan tangent to the cone. THE SPHERE. 25. Definition. A sphere is a solid bounded by a surface all the points of which are equally distant from a point within called the centre. A sphere may be generated by the revolution of a semicircle ABC about its diameter A Cas an axis; for...

...arc of a circle answers to our author's definition of a circumference. For an arc ' is a curve line, all the points of which are equally distant from a point within, called the centre.' This definition is, however, not new. If Professor Smith will consult Montucla's History of Mathematics,...

...the figure. BOOK II. THE CIRCLE. 1. DEFINITIONS. A circle is a portion of a plane bounded by a curve, all the points of which are equally distant from a point within it called the centre. The curve which bounds the circle is called its circumference: Any straight line...

...their homologous sides. CHAPTER XVIII. THE SPHERE. 415. Definition. A sphere is a solid terminated bj a curved surface, all the points of which are equally distant from a point within called the centre, 416. Corollary. The sphere may be conceived to be generated by the revolution of a semicircle, DAE...

...25 ft. and each side of whose base is 10 ft. ? 70.1. Spheres. — 1. A »¡¡here is a solid bounded by a curved surface, all the points of which are equally distant from a point within called the center. 2. The diameter or axis of a sphere is a line passing through the center, and terminated...

...the figure. BOOK II. THE CIRCLE. 1. DEFINITIONS. A circle is a portion of a plane bounded by a curve, all the points of which are equally distant from a point within it called the centre. The curve which bounds the circle is called its circumference. Any straight line...

...12.64 feet ? Ans. 553.63-)- sq. ft. CIRCLES. 418. A Circle is a plane figure bounded by a curved line, all the points of which are equally distant from a point within, called the center. The CIRCUMFERENCE is the bounding line ; as the line AEB D. The DIAMETER is any straight...

...CIRCLE, AND THE MEASURE OF ANGLES. DEFINITIONS. 119. A Circle is a plane figure bounded by a curved line, all the points of which are equally distant from a point within called the center ; as the figure ADB E. 120. The Circumference or periphery of a circle is its entire bounding...