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 ...
Measured angles are displayed on a small OLED screen. To use the protractor, first the reference button must be pressed, then the device may be rotated to measure the angle. Relying on a gyroscope ...
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