An obtuse angle = an angle greater than 90 degrees.
2 x (more than 90 degrees) = (more than 180 degrees).
But the sum of all 3 interior angles of any triangle is always exactly 180 degrees.
So: No triangle can have two obtuse angles.
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Yes, an obtuse triangle can have two congruent angles, where for the obtuse angle measuring A degrees, each of the two other angles measures (180-A)/2.
Yes if it is in the form of an isosceles triangle with the other 2 acute angles being equal
No, An equilateral triangle has 3 congruent angles, an isosceles triangle has 2 congruent angles, a scalene triangle has no congruent angles.
An obtuse triangle has 1 obtuse angle and 2 acute angles
A right angle triangle has a 90 degree angle and 2 acute angles An obtuse triangle has 1 obtuse angle and 2 acute angles