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It is 180 - 104 - 21 = 55 degrees.

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Q: What is the missing angle in the triangle 104 degrees and 21 degrees?
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A triangle with two congruent sides and an angle of 104 degrees is?

A triangle with two congruent sides is isosceles. A triangle with an angle of 104 degrees is obtuse. So you would have an obtuse isosceles triangle.


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The middle angle in a triangle measures 1 degree more than 2 times the smallest angle and 53 degrees less than the largest angle Find the measure of angles of the triangle?

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