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Chapter 2: Problem 73

What is an angle?

Short Answer

Expert verified
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 by step solution

01

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.
02

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.

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