First attempt

Following is the first attempt for an instructional guide prepared by TC Guru, mathcrusader and mafematics:

1. Your avatar is dropped in the center of a circle on Orientation Island.
2. Walked to the edge of the gray circle and took a picture of the sign of one of the four islands.
3. Walk across the gray circle through the center to the other side. (Illustration of Diameter)

Return to the center of the circle and take another picture. Then walk to the edge of the circle and take another picture. (Illustration of Radius)

Step back to view the entire circle while still on the edge.