Answer
The blue and red atoms are equatorial and the green atom is axial.
Work Step by Step
The blue and red atoms are evidently facing away from the ring structure whereas the red atom is on top of the ring.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.