angle
Definition
An angle is a figure formed by two rays that have a common endpoint. The common endpoint is called the vertex of the angle, and the two rays are called the sides of the angle.
Angles are measured in degrees, and there are 360 degrees in a circle. A straight angle is an angle that measures 180 degrees, and a right angle is an angle that measures 90 degrees.
Angles can be classified as acute, obtuse, or straight. An acute angle is an angle that measures less than 90 degrees, an obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees, and a straight angle is an angle that measures 180 degrees.
Angles can also be classified as interior angles and exterior angles. Interior angles are angles that are inside a polygon, and exterior angles are angles that are outside a polygon.
Angles are an important part of geometry, and they are used in many different applications, such as measuring distances, determining directions, and designing structures.
How can the word be used?
The angle between the two lines is 90 degrees.
Different forms of the word
Noun: angle.
Verb: angle, angles, angled, angling.
Adjective: angular.
Etymology
The word “angle” comes from the Latin word angulus, which means “corner” or “angle.” The word angulus is made up of the prefix ang-, which means “bend,” and the noun -ulus, which is a diminutive suffix.
Question
What is an acute angle?
AQA Science Exam Question and Answer
Question:
Define the term "angle" in geometry and explain how it is measured. Provide an example of using angles to solve a problem.
Answer:
- In geometry, an angle is the figure formed by two rays with a common endpoint called the vertex. Angles are measured in degrees using a protractor. For example, to find the measure of the angle between two walls in a room, we can use a protractor to measure the angle between the two walls. Let's say we find it to be 45 degrees.