Unizor - Geometry2D - Square
Channel: Zor Shekhtman on UNIZOR Education
Date: 2011-10-21

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A parallelogram with all 4 sides congruent to each other (i.e. a rhombus) and all 4 angles congruent to each other (i.e. rectangle) is called a square. So, a square is a rhombus and a rectangle at the same time. Therefore, all properties of rhombuses and rectangles (specific and derived from properties of parallelograms) are applicable to a square.