## Explain in Detail :Types of Lines

in Art

There are three types of lines in art: contour, implied, and structural.

Contour lines are the most basic type of line and are created by drawing the outline of an object. Implied lines are created when two or more objects are placed close together and the space between them is implied rather than drawn. This type of line is often used to create the illusion of depth. Structural lines are used to create the framework of a composition and are typically used in architectural drawings or engineering plans.

## What is a Ray?

A ray is a straight line that goes from one point to another.

## Introduction to Angles

An angle is a measure of rotation that is formed by two lines that intersect at a point. The angle is measured in degrees, and can be either acute, right, or obtuse.

## Types of Angles

In mathematics, angles are formed when two straight lines intersect. There are three types of angles: acute, right, and obtuse.

An acute angle is less than 90 degrees. A right angle is exactly 90 degrees. An obtuse angle is greater than 90 degrees.