...contained by more than one line, as the triangle, square, polygon, &c. are excluded; "and is such that all straight lines drawn from a certain point within the figure" (called in the next following definition " the centre") to the circumference, are equal to one another : this...

...figure is called its AREA.] 12. A CIRCLE is a plane figure bounded by one line called the CIRCUMFERENCE or periphery; to which all straight lines drawn from a certain point within the figure, are equal. 13. That point is called the CENTRE of the circle. 14. A DIAMETER of a circle is a straight...

...circus. A geometrical figure contained under one line called the circumference ; and is such, that all straight lines drawn from a certain point within the figure called the centre, to the circumference, arc equal to one another. Thus, In the figure, AB = AC = AD. These are called...

...is a plane surface bounded by a curved line, such that every point in this line is equally distant from a certain point within the figure called the centre of the circle. The curved boundary is called the circumference of the circle; and the straight line which measures...

...— Def. 15. A 0 is a plane figure contained by one line which is called the ©ce, and is such that all straight lines drawn from a certain point within the figure (called the centre) to the ©ce are equal to one another. Ax. 1. Magnitudes which are equal to the same magnitude, are...

...occur in the geometrical representations of space. Describe a circle, and you will see that all right lines drawn from a certain point within the figure, called the centre, to the circumference, are equal to one another. If, says Kant, oblique planes be disposed in different...

...circle is a figure consisting of one closed curved line, called the circumference, and is such that all straight lines drawn from a certain point within the figure, called the centre, to the circumference are equal to each other. In a circle a st. line drawn from the centre to the circumference...