Algeria, Angola, Burkina, Haiti, Indonesia, Liechtenstein, Malta, Monaco, Poland, San Marino, Singapore and Ukraine have flags with exactly two rectangles which are congruent. There are also many flags with more than two rectangles.
No.
They're sides may not be congruent.
No
No
Yes.
No.
if the sides of two rectangles are equal then they r congrunt
They're sides may not be congruent.
Rectangular prism
No
No
They make two congruent rectangles, not to rectangles! This is because the line joining the midpoints of opposite sides are lines of [reflective] symmetry.
Yes.
Yes.
They need not be congruent so the question is based on a fallacy.
When two adjacent sides are equal (congruent).
A parallelepiped.