Pace Work
27/04/2020
8 form
Тема: Кути

In geometry, there are three types of angles:

• acute angle-an angle between 0 and 90 degrees.
• right angle-an 90 degree angle.
• obtuse angle-an angle between 90 and 180 degrees.
• straight angle-a 180 degree angle.

Types of Angles - Acute, Right, Obtuse, Straight and Reflex...

• Acute angle.
• Right angle.
• Obtuse angle.
• Straight angle.
• Reflex angle.

In geometry, an angle measure can be defined as the measure of the angle formed by the two rays or arms at a common vertex. Angles are measured in degrees ( °), using a protractor.

Parts of an Angle:

Arms: The two rays joining to form an angle are called arms of an angle. Here, OA and OB are the arms of the ∠AOB.

Vertex: The common end point at which the two rays meet to form an angle is called the vertex. Here, the point O is the vertex of ∠AOB.

We can find angles in various things around us, such as in a pair of scissors, a hockey stick, a chair.

Types of Angles

Angles can be classified on the basis of their measurements as

- Acute Angles                               - Right Angles                            - Obtuse Angles

- Straight Angles                            - Reflex Angles                           - Complete Angles

Let`s watch this video:

https://www.youtube.com/watch?v=aGejx2fRCHU