Question

Which properties of a square are different from properties of a parallelogram?

• A. The opposite sides are parallel.
• B. The opposite sides are equal in length.
• C. Diagonals bisect each other at ${90}^o.$
• D. Diagonals are equal in length.

Answer 1

Answer: (C), (D)

Diagonals are equal in length.

The common properties of a parallelogram and a square are:

• The opposite sides are parallel.
• The opposite sides are equal in length. Specifically, in a square, all sides are equal.

In a square, which is also a rhombus, diagonals bisect each other at ${90}^o$, but it is not true for each parallelogram.

Also, the diagonals of a square are equal in length, which is not true for each parallelogram.