No, but an equilateral triangle is a regular polygon with 3 equal sides and 3 equal angles.
A regular polygon is a shape in which all angles are equal. An isosceles triangle has two equal sides, thus two equal angles, but the other side/angle differs. Therefore an isosceles triangle is not a regular polygon.
It is then classed as a regular polygon such as a square or an equilateral triangle.
Equilateral Triangle
A three-sided polygon is a triangle. The angles in a triangle add up to 180 degrees.
Yes, an equilateral triangle can be a regular polygon because it has three equal sides and three equal interior angles.
Equilateral triangle or any other regular polygon.
They are regular polygons such as a square and an equilateral triangle
An equalateral triangle
An isosceles triangle
No. A regular polygon has all sides equal and all angles equal. Neither of those properties can be true of a right triangle. A regular triangle is an 'equilateral one'. Its sides are equal, and each of its angles is 60 degrees.
If you mean a scalene triangle, then no. A regular polygon is defined as having equal angles. A scalene triangle has 3 different angles (and 3 different length sides).