O āϕ⧇āĻ¨ā§āĻĻā§āϰ āĻŦāĻŋāĻļāĻŋāĻˇā§āϟ āĻŦ⧃āĻ¤ā§āϤ⧇ A āĻŦāĻŋāĻ¨ā§āĻĻ⧁āϤ⧇ āĻ¸ā§āĻĒāĻ°ā§āĻļāĻ• AB∠AOB = 60° āĻšāϞ⧇ ∠ABO = āĻ•āϤ? | Prostuti