The science which treats of the beautiful, and its various modes of representation in Nature and art ; the philosophy of the fine arts.

Emphasis of light or of dark in a light-and-shade drawing ; of dark in an outline drawing ; and of color or of light and dark in a color sketch.

The perpendicular distance between the bases, or between the vertex and the base, of a solid or plane figure.

The difference in direction of two lines which meet or tend to meet. The lines are called the sides, and the point of meeting, the vertex of the angle. An angle is measured by means of an arc of a cir [..]

The summit or highest point of an object.

The image produced in the eye by the outline, light and shade, or color of any object.

See Circle.

The orderly disposition of objects or forms.

An imaginary straight line passing through its centre and about which the different parts are symmetrically arranged.

A straight line passing through the centre of a figure, and dividing it into two equal parts.