Answer:
The answer should be rectangle only.
Based on the question, the picture showing looks like a rectangle.
However, this rectangle has congruent sides, and so does a square.
A square is a special kind of rectangle and it also has congruent sides.
So I think the answer would be Rectangle or square.
Hope this helped! :D
Answer: Krista can fill 3 1/3 bowls of gelatin.
