1598 Spanish Colonization of New Mexico Juan de OÃ±ate leads the Spanish colonization of the province of New Mexico. He establishes his first capital in San Juan de los Caballeros at the confluence of the Rio Grande and Chama River. Read More.
1 An equilateral triangle has all its angles measuring 60Â°. So, the angles of an equilateral triangle are Congruent Angles.  A square and a rectangle have all their angles measuring 90Â°. So, the angles of a square and a rectangle are Congruent Angles.
Since the question asks for sides, the answer would be an equilateral triangle. An equilateral triangle has three congruent sides. Of course, an equilateral triangle is also â¦an equiangular one. All sides are the same length, so all three angles are 60Â° . Congruence is usually applied with respect to TWO triangles. If each triangle has three sides equal to the other triangle's three sides, then the triangles are congruent.