1.Drag the point(unnamed) on the circumference of the circle to adjust to 1 cm radius.[br]2.Move the point on the slider (Angle) and adjust such that the radius equal to arc length[br]3. Note the radian measure and degree measure[br]4. Drag the point(unnamed) on the circumference of the circle to adjust to any required radius[br]5. Move the point on the slider (Angle) and adjust such that the radius equal to arc length[br]