* Interior angles at each corner are 60 degrees. * All sides of equal length. * Rotational Symmetry of 3 * Perimeter: 3 * the side length * Area: a^2 * sqrt(3)/4 it has three congurnet angels
An equilateral triangle.
Yes.
Yes, because an equilateral triangle is always acute.
sometimes, but not always
It always is because it has 3 equal angles of 60 degrees
An equilateral triangle.
Yes. Every triangle is a polygon.
No, never in plane geometry.
An equilateral triangle is always similar to other equilateral triangles but never similar to a scalene triangle. Similar triangles have corresponding angles that are equal, and in an equilateral triangle, all angles are 60 degrees, while a scalene triangle has all angles of different measures. Thus, the two types cannot be similar.
No, an equilateral triangle always has 3 equal angles (each angle is 60°)
no, it is impossible an angle of an equilateral triangle is always 60 degrees it can't be 90 degree
An isosceles triangle has at least two congruent sides. An equilateral triangle has three congruent sides. So, an equilateral triangle is a special case of isosceles triangles. Since the equilateral triangle has three congruent sides, it satisfies the conditions of isosceles triangle. So, equilateral triangles are always isosceles triangles. Source: www.icoachmath.com