The properties of all rhombuses include:
- All four sides are equal length.
- The diagonals bisect each other at a 90 degree angle.
- Opposite angles are equal.
So, the correct responses from your list are:
- All four sides are equal length
- The diagonals bisect each other at a 90 degree angle
- Opposite angles are equal
The diagonals are not congruent in a rhombus; they are only bisected at right angles. Additionally, while a square is a specific type of rhombus where all angles are 90 degrees, not all rhombuses have that property.