Now, let's create a point on the semicircle arc, which will be the point to guess the angle. After that, we will create a line segment that start with the center and end at the outer circle.

To construct a line segment between the center and the outer circle, I need a point. So, I needed to create a ray using points O and G. Then I could intersect the ray and the outer circle, point H. [br][br]Now I can hide the ray and create the line segment I need between O and H.

This line segment (with and arrow decoration at the one end) will be the angle the user use to guess the random angle in each question. [br][br]It is your turn to do it.