Angle at centre is twice the angle at the circumference

トピック:円

Angle at centre is twice the angle at the circumference.

Adjust the point A to get the angle at the centre O = 60 and observe the angle at the circumference. What is the angle at the circumference?

該当するものを全て選択

What is the relationship between the angle at the circumference and angle at the centre O?

該当するものを全て選択