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When two rays intersect an angle is created, As different classification of angles are there on the basis of measurement of angles and on the basis of properties of angles.

What is definition of term "Angle" ?

When two rays or straight lines intersect at one of their ends, an angle is created. Vertex of an angle refers to the point at which two points meet. The Latin word "angulus," which means "corner," is the origin of the English term "angle."

Symbol of Angle

The symbol ∠ represents an angle. Angles are measured in the form of degrees (°) using a protractor.

For example, 45 degrees is represented as 45°

Sections of Angles

  • A vertex is also the corner of an angle or at the place where two lines or sides come together to intersect at the point. In the above figure, O is the vertex.
  • Arms: The angle's two sides which are connected at a single terminal. An angle's OA and OB are its arms.
  • Initial Side: Also known to as the reference line, this is the first side of the angle that is to be drawn. The reference line is called OB.
  • Terminal Side: The side that the angle measured is performed up to. OA is the terminal side.

Types of Angles

Based on their measurements, here are the many types of angles:

  • An acute angle that measures less than 90° at the vertex of the lines.
  • An obtuse angle measured between 90° to 180°.
  • A right angle is exactly measures 90° at the vertex.
  • An angle measuring precisely 180° is called a straight angle.
  • A reflex angle is measured between 180°- 360°.
  • A complete angle is measured is equal 360°.

Interior and Exterior Angles:

Interior angles: Interior Angles are angle formed inside the shape.

Exterior angles: Exterior angles are to be angles that is formed outside a shape, between any side of  shape and to an extended adjacent side.

Complementary and Supplementary Angles:

Complementary angles: Angles that add up to 90° (a right angle) are called complementary angles.

Supplementary angles: Angles that add up to 180° (a straight angle) are called supplementary angles.

To learn more about angles, visit:

https://brainly.com/question/28451077

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