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Each interval between numbers on a clock is 30 degrees. When the minute hand is on the 6 (which is the half mark), the hour hand has already moved 15 degrees from 12, because half of 30 is 15. To make calculating the angle easier, we can apply what we know. We know that a straight line is 180 degrees. Now subtract 15 from 180, and you get 165 degrees.
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Earn +20 ptsQ: What is the obtuse angle of a clock at 12.30?
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Continue Learning about Geometry
What triangle has an obtuse angle?
An obtuse triangle has an obtuse angle.
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An obtuse angle has no complementary angle.
What angle does the minute hand of a clock turn through when it moves form 1 to 9?
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If an angle is obtuse then it has a measure of 120 degrees?
When an angle has a measure of 120 degrees, it is an obtuse angle. When an angle is an obtuse angle its measure is between 90 and 180 degrees. That is: 90 degrees < obtuse angle < 180 degrees.
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