How to make a sphere in Sketchup

1. Draw a circle shape on the ground surface of the origin point where the red, green and blue axis points meet.

2. Low your view point to ground level

3. Draw a second circle vertical and fron the centre of the ground circle, make this circle smaller than the first

4. Double click select the ground circle and then select the Follow Me tool and click the virtical circle, the sphere will form

5. Double click select the flat ground circle and delete