* 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
Yes. Every triangle is a polygon.
An equilateral triangle.
No, never in plane geometry.
no, it is impossible an angle of an equilateral triangle is always 60 degrees it can't be 90 degree
No, an equilateral triangle always has 3 equal angles (each angle is 60°)
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
equilateral Triangle