An acute triangle is a triangle in which each angle is an acute angle. ... For example, an equilateral triangle is always acute, since all angles (which are 60) are all less than 90.

Is every equilateral triangle is also an acute triangle?

Yes, every equilateral triangle is an acute triangle. We have the following property about the measures of the angles of any equilateral triangle.

Are all equilateral triangles acute and isosceles?

All equilateral triangles are acute and isosceles. We know that an isosceles triangle has two sides with equal measure and an equilateral triangle has three equal sides, so we can conclude that each equilateral triangle is an isosceles triangle as well.