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1. What is m angle R ? A 45 degrees B 69 degrees C 79.5 degrees D 90 degrees

1. What is m angle R ? A 45 degrees B 69 degrees C 79.5 degrees D 90 degrees-example-1

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The answer is c because a triangle measures 180 but in this case it’s two so it’s 360 so first you add up all the given measurements and then you can subtract it from 360
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User Crewshin
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