Answer:
protractor
Step-by-step explanation:
The instrument formed by a graduated semicircle used to measure and draw angles.
The protractor is used to measure angles. It has a semicircular shape (scale from 0º to 180º). The contour of the protractor is divided into 180 or 360 equal parts, corresponding to sexagesimal degrees. In turn, between two marks some divisions indicate the tenths of degrees.