Question

Triangle Ris a right triangle. Can we use two copies of TriangleR to compose a parallelogram that is not a square? Explain yourreasoningR.R

Answer 1

If we have a right triangle R as:

We have a right angle.

The only way we can make a parallelogram that is not a square is placing the triangle so the parallelogram does not have any right angle. That would be;

This way, the right angles are added to one of the other angles, in order to have none right angles, as it is the condition to have a four-side figure that is not a square or rectangle.

(If the triangle R can compose a square, it should have two equal sides, not like our figure).