Answer:
equilateral equiangular, or the third one
Step-by-step explanation:
Acute and obtuse is describing an angle of a certain triangle to describe what kind of a triangle it is.
Isosceles right is a type of a triangle.
So, equilateral equiangular is the only thing left.
Hope it helps!!
Let me know if I'm wrong or you are confused and need help about anything else!!
Equilateral equiangular phrase does not describe a triangle.
An acute triangle is a triangle that all the 3 internal angles of the triangle measures less than 90 degrees.
Isosceles Triangle describes a triangle in which 2 of the 3 sides has the same length.
Obtuse triangle describes a triangle in which one of the interior angles of the triangle measure more than 90 degrees.
Equilateral equiangular does not describe a triangle.
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