equiangular.
It is an equilateral triangle
No, an equilateral triangle can not be an obtuse triangle. All angles in an equilateral triangle are 60o. An obtuse triangle has 1 angle that is greater than 90o.
Any isosceles triangle which is not also an equilateral triangle. An equilateral triangle would have three.
"if a triangle is an equilateral triangle" is a conditional clause, it is not a statement. There cannot be an inverse statement.
it's called an equilateral triangle.