Measuring an angle

Tutorial

How to Measure
an Angle

Step-by-step guide with protractor

45°

 Measuring an angle with a protractor is easy! Follow these simple steps:

Steps to Measure an Angle:

1. 
   Place the Protractor:

   • Align the center hole (midpoint) of the protractor with the vertex (corner) of the angle.

   • Make sure the baseline (0° line) of the protractor lies exactly on one arm of the angle.

2. Read the Angle:

   • Look at the other arm of the angle.

   • Check the degree scale (numbers) where this arm points.

     • If the angle opens to the right, use the outer scale.

     • If it opens to the left, use the inner scale.

3. Note the Measurement:

   • The number where the second arm crosses the protractor is your angle.

   • For example, if it points to 45°, the angle is 45 degrees.

Quick Tips:

✔ Always align the vertex and baseline correctly.
✔ Use the correct scale (inner/outer) based on the angle’s direction.
✔ If the angle is bigger than 180°, measure the smaller side and subtract from 360°.

That’s it! Now you can measure any angle easily. 📐😊