A protractor is used to draw and measure angles. An angle is the amount of turn between two lines. Angles are measured in degrees with the symbol °. Angles can be labelled with 3 letters (eg DEF) to ...

Close-up of male hands with divider drawing design sketch on drafting paper Close up of hands of mature male architect working on project blueprint, making measurement with ruler and drawing design ...

Engineer makes calculations using calculator and writes results on drawing. Architect takes notes in yellow paper notepad sitting at table against large drawing Animation of line sketch of ruler and ...