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Geometry: Types Of Angles




 
In geometry, angles can be classified according to the size of the angle.

In these lessons, we will learn the following types of angles:
right angles, acute angles, obtuse angles, straight angles, reflex angles and full angles.

Related Topics:
More Geometry Lessons

The following table shows the different types of angles: right angles, acute angles, obtuse angles, straight angles, reflex angles and full angles. Scroll down the page if you need more explanations about each type of angles, videos and worksheets. types of angles


What are the types of angles?
The following video will demonstrate and distinguish between the different types of angles: right, acute, obtuse, straight, reflex and full angles.



Worksheets

Practice Types of Angles with the following worksheets
Types of Angles - Acute, Obtuse, Reflex
Angles in a straight line
Angles at a point
Geometry Worksheets

What are Right Angles?

A right angle is an angle measuring 90 degrees. Two lines or line segments that meet at a right angle are said to be perpendicular.

right angle

The following video explains more about right angles.


 

What are Acute Angles?

An acute angle is an angle measuring between 0 and 90 degrees.

acute angle 40 deg

What are Obtuse Angles?

An obtuse angle is an angle measuring between 90 and 180 degrees.

obtuse angle

What are Straight Angles?

A straight angle is a straight line and it measures 180 degrees.

straight angle

What are the differences between a right, acute, obtuse and straight angle?


What are Reflex Angles?

A reflex angle is an angle measuring between 180 and 360 degrees.

reflex angle

What are Full Angles?

A full angle is an angle of one complete turn which is 360 degrees.


An angle of one whole turn is 360˚.

Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.


You can use the free Mathway widget below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.


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