Answer:
Options A, B, C and D are correct choices.
Step-by-step explanation:
We are asked to choose the properties of parallelograms from our given choices.
By the definition of parallelogram:
- The opposite sides of a parallelogram are parallel and congruent.
- The two consecutive angles of parallelogram are supplementary.
- Opposite angles of parallelogram are congruent.
- Diagonals of parallelogram bisect each other.
Upon looking at our given choices, we can see that options A, B, C and D are correct choices.
