Yes. Only triangles on a flat plane have angles summing 180°.
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A triangle that has only 2 equal sides and is more than ninety degrees.
not if its more than 90 degrees
The classifications of a triangle are:Right Triangle- has one angle that is 90 degreesEquilateral Triangle- has three equal sides and three equal angles (each is 60 degrees)Isosceles Triangle- has two equal sides and two equal anglesScalene Triangle- has no congruent sidesAcute Triangle- has three acute angles (less than 90 degrees)Obtuse Triangle- has one obtuse angle (more than 90 degrees)
Yes.
An obtuse triangle has 1 angle greater than 90 degrees and 2 angles less than 90 degrees but of different sizes