Some have one obtuse interior angle, others have none.
A triangle can have no more than one obtuse angle.
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It is an obtuse triangle having 1 obtuse angle and 2 different acute angles Or it is an isosceles triangle having 1 obtuse angle and 2 equal acute angles
An obtuse triangle or an isosceles triangle if the 2 acute angles are equal in size
There is no triangle that has 2 equal obtuse angles because the 3 interior angles of any triangle must add up to 180 degrees and 2 obtuse angles would be over 180 degrees. It is possible for a triangle to have two equal acute angles in which case it would be an isosceles triangle.
a triangle easy
Yes the 3 interior angles, 2 of which are acute angles, of an obtuse triangle add up to 180 degrees