original: This means that it has four equal sides and four equal angles (90 degree angles, or right angles).
simplifications: This means it has four equal sides and right angles. This means that it has four equal sides and four equal angles. It has four equal sides and four equal angles. The angles must be 90 degrees or right angles. This means that it has four equal sides. It also has four equal 90-degree angles (or right angles). This means it has four equal sides and four equal angles. These are 90 degree angles or right angles. This means is has four sides of the same length and four angle of the same size. It has four equal sides and four equal right angles. This means that is has both four equal sides and angles (90 degree or right). This means that it has four equal sides and four equal angles. This means it has 4 equal sides and 4 equal angles (the angles of 90 degrees or the right angles).