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If m angle R=70 in circle o what is m angle O

If m angle R=70 in circle o what is m angle O-example-1
User Trenki
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2 Answers

6 votes
The answer is m angle 0 = 40
User Mehdi Charife
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7 votes

m\angle O=2\cdot m\angle R=2\cdot70=140
User Cameron Landers
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