Problem 73 - Introductory and Intermediate Algebra for College Students 4th

Question

What is an angle?

Step-by-Step Solution

Answer

An angle is formed by two rays sharing a common endpoint called the vertex. It can be of several types depending on its measure in degrees.

Step 1: Defining an Angle

An angle is a figure formed by two rays, called the sides of the angle, sharing a common endpoint known as the vertex. It is measured in units called degrees or radians.

Step 2: Types of Angles

There are several types of angles based on their measurement. For instance, an angle measuring 90 degrees is called a right angle. An angle smaller than 90 degrees is acute, and one over 90 degrees but less than 180 degrees is obtuse. An angle measuring 180 degrees is called a straight angle, while one greater than 180 degrees but less than 360 degrees is reflex. A full rotation, or 360 degrees, forms a complete angle.