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Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180

How do you determine whether a relationship represented as as graph is linear or nonlinear

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?