A PROTRACTOR is a clear plastic device to measure angles from 0 to 180 degrees. Use the red + at the bottom center of the protractor for the vertex of the angle and line one side of the angle along the black line connected to the red + . The protractor ABOVE is measuring 30 degrees. Press the Measure Angle button to use the protractor.

You can move the protractor by clicking on it with the mouse pointer and dragging it. Drag the PROTRACTOR to the angle to measute it, measure it, and enter the angle in the answer box.

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