An angle is represented by the symbol ∠. Here, the angle below is ∠AOB.
Angles are measured in degrees, using a protractor.
Parts of an Angle:
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
Interior and Exterior Angles:
Exterior angles: Exterior angles are the angles formed outside between any side of a shape, and a line extended from the adjoining side. Here, ∠ACD is an exterior angle.
Let's do it!
Instead of handing out geometry angles worksheets to your children, ask your child to observe/spot the things in which they can find different angles such as in a hanger, hands of a clock, or the roof a house.