Question

Triangle R is right triangle. Can we use two copies of triangle R to copse a parallelogram that is not a square?

Answer 1

yes

Explanation:

As shown in the image above

Answer 2

Yes, We can form parallelogram.

Explanation:

When the other two angles are 45° and 45° of triangle R, then the parallelogram formed by Copies of triangle R will be square.

Other than these two measures, for example if the other two angles are 30° and 60°, the shape formed will be a parallelogram .