You can insert a Geodreieck protractor (also known as a set square or T-square) on a page, and then manipulate its size, rotation and location.
To insert a Geodreieck protractor
To move the protractor
Press the inner part of the protractor (within the semi-circle), and then drag the protractor to a different position on the page.
To resize the protractor
Press the semi-circle, and then drag away from the center of the protractor to make it bigger or toward the center of the protractor to make it smaller.
To rotate the protractor
Press the outer part of the protractor (outside of the semi-circle), and then drag the protractor in the direction you want to rotate it.
The protractor displays the current rotation in degrees.