Measure an angle with Protractor

What is a protractor

Shape of a protractor

The shape of a protractor is as a semi circle.  Protractor’s upper side is curved and lower side is a straight line.
The curved edge is divided into 180 equal parts, and each part is equal to a degree.

Most protractors have two sets of numbers, going in opposite directions.

1. Outer scale or Upper set    
2. Inner scale or bottom set.

In inner scale markings start from 0 degree on the right hand side and end with 180 degree on bottom set. (Anti clock wise)

The markings start from 0 degree on the left hand side and end with 180 degree on upper set. (Clock wise)

Now we will learn, how to draw angles, with the help of a protractor. How to measure different angles using protractor. 

First we focus on a angle, what is an angle?

A figure formed by two lines when they meet at a vertex or corner is an angle.

An angle is measure in degree, which is unit of angle.

Here is ∠YXZ is 50^0. and vertex of angle is X.

An angle is measure in degree which is unit of angle.
The symbol of degree is denoted by a little circle 0.

50⁰ means 50 degrees and read as 50 degree.

    Measure angle with Protractor

Step 1: Place the midpoint of the protractor on the vertex of the angle X. 

Step 2: Adjust the one side of the angle with base line of the protractor.

Step 3: Read the value of the angle ∠YXZ, from the inner scale.

Angles from 10⁰  to 180⁰