Measuring Angles Using Protractor (modified, up to 180 deg)

[b](Updated: 8 Sept 2016)[/b][br]Measure the angle using the protractor.[br]Drag the protractor to appropriate position. Drag the red point to rotate it.[br]Drag the green points or press the "Random" button to adjust the angle.
Anthony Or. GeoGebra Institute of Hong Kong.
– txywishes, Anthony OR 柯志明

Information: Measuring Angles Using Protractor (modified, up to 180 deg)