Question

drag a letter to identify the truth value of the following statement:
t f
if a parallelogram has four right angles, then it is a rectangle

Explanation:

A parallelogram is a quadrilateral with opposite sides parallel and equal. A rectangle is defined as a parallelogram with four right angles (or a quadrilateral with four right angles and opposite sides equal and parallel). So if a parallelogram has four right angles, by the definition of a rectangle, it must be a rectangle. Thus the statement is true.

Answer:

T