The angle you want to draw is how many degrees, just point at the scale of how many degrees on the protractor, and then draw a ray through the point you just drew with the endpoint of the ray as the endpoint. Also, when you click a point, pay attention to whether the position of your zero mark is in the outer circle or the inner circle.

First of all, we need to draw the vertex and side of the angle, which coincides with the time of measuring the angle. The vertex and side can be drawn at will, and their position does not affect the degree of the final angle. After completion, we need to make the vertex of the angle coincide with the center of the protractor, and the side coincides with the zero scale line.