Which quadrilateral will always have 4-fold reflectional symmetry? trapezoid rhombus square rectangle

Arandom number generator is used to model the patterns of animals in the wild this type of study is called

What two criteria are needed for triangles to be similar

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?