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.
parallelograms: rhombuses, rectangles and squares. A rhombus is a parallelogram. with four congruent sides. A rectangle is a parallelogram. with four right angles. A square is a parallelogram with. four congruent sides and four right. angles. Venn Diagram shows relationships-- MEMORIZE. â¢Each shape has the properties of every group that it. belongs to.