Question

Why is it impossible to have an obtuse equilateral triangle?

Answer 1

All angles are less than right angles , each one is less then 90 degrees . An acute triangle may be equilateral , isosceles , or scalene Its impossible because an equilateral triangle is always acute

Answer 2

In an equilateral triangle all angles have to add up to be 180 and also have to halve the same angle and three obtuse angles cannot add up to 180