Answer:
Property 1. Each of the interior angles of a square is 90^\circ90
∘
.
Property 2. The diagonals of a square bisect each other.
Property 3. The opposite sides of a square are parallel.
Property 4. A square whose side length is ss has area s^2s
2
.
Property 5. A square whose side length is ss has perimeter 4s4s.
Property 6. A square whose side length is ss has a diagonal of length s\sqrt{2}s
2
.
Property 7. The diagonals of a square are equal.
