The Different Angles with One Can Measure Something



Angles are seen in geometry forms and shapes to create a perspective view. Angles may seem like a very simple geometric shape to design, but there are many different types of angles, and they each have their own characteristics and properties. This article will provide all the information you need about angles to describe how they work, what type or name an angle has, and it will even include examples so that anyone can understand them better. 

Showing examples of one angle named the acute angle will show that angles can vary in size depending on how long or short they are. With certain angles, we also know that the vertex form is either triangular or straight due to their appearance. The degree measure determines what type of angle it might be based on its number value.

When it comes to recognizing which types of angles, there are and their characteristics, knowing the definition of an angle is the first step. When lines are not intersecting each other, they are considered to be parallel. 

Angles are measured in degrees ranging from 0° to 360° or more depending on the situation or what you’re working with. The smaller the degree number, the more acute the angle will be. For example, obtuse angles are at least 88° (more than obtuse), and right angles measure to be exactly 90° (exactly right). There is also another type of angle called an acute angle.

  • Acute angle

The word acute means “smaller than a right angle.” Acute angles look smaller than a right angle to the eye, but depending on what it is being used for or where one is in geometry, they may be larger. An acute angle has a vertex that has a sharp turn and two short arms coming off of each side.

Acute angles measure between 0° and 89°. Whether an acute angle is greater than 89° or smaller than 0° depends on the degree measure.

  • Obtuse angle

An obtuse angle is a little different in appearance because it looks like an acute angle, but one side of its arms are much longer and curve inward in a way that makes them look almost straight. An obtuse angle has a vertex with a straight turn and two long arms coming off of each side, making it different from a right angle.

An obtuse angle is greater than a right angle, but less than 180° or exactly 89°. An obtuse angle can measure anywhere from 90° to 179°, depending on the degree measure.

  • Right angle

In geometry, a right angle is an angle that comes to be exactly 90° right on the dot. A right angle’s arms are straight and meet at their endpoint, creating a perfect corner at the vertex.

A right-angle measures from 0°-89° or 90°-179° depending on if it is obtuse or acute. The degree measure determines whether it is greater or smaller than a right angle.

  • Straight angle

A straight angle has arms that are exactly the same length and come together to make a vertex with two points on each end. When lines are parallel, they form a straight angle which means the inside angles are all right angles. A straight angle measures from 180°-360° or 0°-180° depending on if it is obtuse or acute. The degree measure determines whether it is greater than 180° or less than 0°.

  • Vertical angles

Vertical angles lie on opposite sides of a transversal and have the same degree measure.

 A vertically opposite angles are two angles with the same vertex and the same side, but not the same interior point. 

  •  Complementary angles

Complementary angles are two angles whose total is 90°. In other words, when one adds them together, they make up a right angle. They must add up to 90 degrees because a straight line divides the plane into two parts, so together, the angles must add up to 90 degrees or a half turn.

These were some types of angles, and there are many angles available if one access the Cuemath website. Cuemath has all the information regarding angles and every other math topic.


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