obtuse triangle
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None, because an angle cannot have congruent sides.
An angle greater than 90 degrees is called an obtuse angle.
When the angle = 90 degrees, it is a Right Angle. When the angle is greater than 90 degrees, it is an obtuse angle.
An obtuse angle is greater than 90 degrees but less than 180 degrees
The measure of an angle is greater than 90°.