If an angle in standard position intercepts an arc on a circle such that the arc measures $104°$, what is the measure of the arc QR?

• A. $52°$
• B. $128°$
• C. $104°$
• D. $26°$

Answer: (C)

Verified step by step guidance

1. Understand that the measure of an arc intercepted by an angle in standard position on a circle is equal to the measure of that angle in degrees.
2. Identify the given arc measure, which is 104° in this problem.
3. Recall that the arc QR intercepted by the angle will have the same measure as the angle itself, since the angle is in standard position and intercepts that arc.
4. Therefore, the measure of arc QR is equal to the given arc measure, which is 104°.
5. No additional calculations are needed because the intercepted arc measure directly corresponds to the angle's measure in degrees.