<P> In geometry , an equilateral triangle is a triangle in which all three sides are equal . In the familiar Euclidean geometry , equilateral triangles are also equiangular ; that is , all three internal angles are also congruent to each other and are each 60 ° . They are regular polygons , and can therefore also be referred to as regular triangles . </P>
<P> In geometry , an equilateral triangle is a triangle in which all three sides are equal . In the familiar Euclidean geometry , equilateral triangles are also equiangular ; that is , all three internal angles are also congruent to each other and are each 60 ° . They are regular polygons , and can therefore also be referred to as regular triangles . </P>
what is the size of the angles of an equilateral triangle
what is the size of the angles of an equilateral triangle
60 °
60 °