Question

How many rectangles congruent to this rectangle are there in the following diagram?

• A. 6
• B. 7
• C. 9
• D. 15

Answer 1

The correct option is C 9

The rectangles that are congruent must be the same size and shape, so resizing is not allowed. However turning is allowed.
The ones shaded blue in the below figure are congruent.

Then, there are $9$ congruent rectangles in the given figure.

Therefore, option $C$ is correct.