Protractor

A protractor is a tool used for measuring and drawing angles with specific measures. A protractor consists of a half circle and a straightedge. The rounded part is marked in degrees from 0^(∘) to 180^(∘). This measuring scale is used for determining angle measures.

The central mark on the straightedge helps to align the protractor's center with the angle's vertex. Similarly, the straight line at the bottom helps correctly align the protractor with the angle's sides.

Protractors can also be used to measure and set angles in real life. Carpenters use them to measure angles when cutting wood for joints, ensuring that the pieces fit together properly. Architects often use protractors to create and check angles in building designs and blueprints.