A triangle can only have 1 obtuse angle. Obtuse - greater than 90 degrees. Since a triangles 3 angles add up to 180 degrees, only 1 angle can be obtuse. Right triangle 90 degrees and 2 - 45 degree angles. Perfect? triangle has 3 - 60 degree angles.
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An isosceles obtuse triangle is a triangle with 1 obtuse angle and only 2 congruent sides.
No, an equilateral triangle can not be an obtuse triangle. All angles in an equilateral triangle are 60o. An obtuse triangle has 1 angle that is greater than 90o.
-- If a triangle has an obtuse angle in it, then it's called an obtuse triangle. -- No triangle can have more than one obtuse angle in it . -- Right triangles, acute triangles, and equilateral triangles don't have any obtuse angles in them.
An obtuse triangle
obtuse triangle