Triangles without right angles are:-
Scalene triangles
Obtuse triangles
Isosceles triangles
Equilateral triangles
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isosceles right angle traingle
the characteristeristics that describes a right isosceles traingle is all sides are equal twosidesmeet at a 90 angle
A measurement that can range from 1º to 179º
A acute triangle is a triangle with only acute angles (angles less than 90 degrees). No obtuse or right angle.
Assuming that a traingle is meant to be a triangle, then the answer is none.