Drew does push-ups every three days starting in january 3.he does sit ups every four days starting on january 4.on which days in january will he do both push ups and sit ups? use words, numbers, or models to justify your answer.

If the angle bisectors of a pair of opposite angles of a quadrilateral are the opposite sides of a parallelogram formed by the two angle bisectors and two sides of the quadrilateral, is the quadrilateral always a parallelogram? explain your answer.