• The opposite sides are equal;
• opposite corners, are also equal;;
•
the sum of the corners adjacent to one party equals 180 degrees;
• the sum of all corners will be 360 degrees;
• diagonals are crossed, and divided by a point of intersection in half;
• diagonals divide a parallelogram into 2 triangles which are equal among themselves;
• the point of intersection of diagonals will be his center of symmetry;
• the corner between heights will be equal to his acute angle;
• bisectors of 2 opposite corners are parallel.
Properties of a parallelogram