Problem 161 of 7
Complete the missing step in the circumcircle construction: The circumcenter O is marked and the compass radius is set from O to a vertex.
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
sequence compass-straightedge operations.
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Missing step must match incircle/circumcircle construction logic.
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Your answer is equivalent to the expected form.
Walkthrough
Full solution stays hidden until you ask for it.
1. Identify whether the target is incenter/incircle or circumcenter/circumcircle.
2. Recall the correct construction sequence.
3. State the next required step.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Switching angle bisectors and perpendicular bisectors.