Obtuse triangles | Obtuse Angle

Obtuse triangles have one angle that is greater than 90° degrees.(Obtuse triangles have one obtuse angle).
sum of the angles of an obtuse triangle is always 180 degrees.
An obtuse triangle will have one and only one obtuse angle. The other two angles are acute angles. 
The sum of the two angles other than the obtuse angle is less than 90ยบ. 
An obtuse triangle may be scalene or isosceles.
Figure:Obtuse triangle
Obtuse Angle Defintion

An Obtuse Angle is more than 90° but less than 180°.

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