A quantity that changes freely and may determine the value of other variables is called a(n)
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Which is a true statement about an exterior angle of a triangle a. it is formed by two segments that are not sides of the triangle, b. it forms a linear pair with one of the interior angles of the triangle, c. it is complementary to one of the interior angles of the triangle. d. it is formed by two segments that are sides of the triangle.

The parabola opens: y=√x-4 (principal square root) up down right left

What is the measure of angle x? answer