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A Circle is a plane figure bounded by a curved line every point of which is equally distant from a point within called the center.
Elements of Geometry and the First Principles of Modern Geometry - Page 34
by Wm. H. H. Phillips - 1878 - 209 pages

The National Arithmetic ...: Combining the Analytic and Synthetic Methods ...

Benjamin Greenleaf - Arithmetic - 1841 - 314 pages
...round pyramid, having a circular base. 8. A sphere is a solid, bounded by one continued conveX surface, every point of which is equally distant from a point within, called the centre. The sphere may be conceived to be formed by the revolution of a semicircle about its diameter, which...

A New System of Arithmetic, on the Cancelling Plan: Embracing the Rules of ...

Charles Guilford Burnham - Arithmetic - 1841 - 312 pages
...round pyramid, having a circular base. 8. A sphere is a solid, bounded by one continued convex surface, every point of which is equally distant from a point within, called the centre. The sphere may be conceived to be formed by the revolution of a semicircle about its diameter, which...

Charles DAVIES (LL.D.) - Arithmetic - 1843 - 348 pages
...acres. 5. What is the content of a field 27 chains long and 9 rods broad. Ans. 6A. 0R. 12P. § 198- A circle is a portion of a plane bounded by a curved line, every part of which is equally distant from a certain point within, called the centre. The curved line AEBD...

Charles Davies - Arithmetic - 1844 - 340 pages
...acres. 5. What is the content of a field 27 chains long and 9 rods broad. Ans. &A. 0R. 12P. § 198- A circle is a portion of a plane bounded by a curved line, every part of which is equally distant from a certain point within, called the centre. The curved line AEBD...

Elements of Plane Geometry: For the Use of Schools

Nicholas Tillinghast - Geometry, Plane - 1844 - 96 pages
...EVERY line which is not straight, is called a curve line. 2. A circle is a space enclosed by a curve line, every point of which is equally distant from a point within ; which point is called the centre. 3. The boundary of a circle is called its circumference. 4. A radius...

A manual of natural philosophy, by J.L. Comstock and R.D. Hoblyn

John Lee Comstock - 1846 - 506 pages
...GLOBE. A round or spherical body, more usually called a sphere, bounded by one uniform convex surface, every point of which is equally distant from a point within, called the centre. GNOMON. An apparatus used by the ancients for finding the altitudes and declinations of the celestial...

The Columbian Calculator: Being a Practical and Concise System of Decimal ...

Almon Ticknor - Arithmetic - 1846 - 274 pages
...inches long, and 13 feet, 6 inches wide ? Ans. 2:H yards To measure a circle, area, circumference, <SC A circle is a portion of a plane bounded by a curved line, every part of which is equally distant from a certain point within, called the centre. The curved line, AEBD,...

The American Arithmetic

James Robinson (of Boston.) - 1847 - 302 pages
...the figure F, the frustum of a cone. 7. A SPHERE, or GLOBE, is a solid, bounded by a convex surface, every point of which is equally distant from a point within, called the centre. The sphere may be conceived to be formed by the revolution of a semicircle about its diameter. The...