Which of these best describes a pair of supplementary angles? a . Two angles whose sum is 90°.

b . Two non-adjacent angles formed by the intersection of two lines.

c . Two angles whose sum is 180°

d . Two angles that share a common side and vertex with no common interior points.

c . Two angles whose sum is 180°

Step-by-step explanation:

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the circle graph is not a function.

step-by-step explanation:

the graph of the circle is not a function.

because for a graph to be a function, each value of x must give one value of y

in the circle, the values of x for -2< x< 2 each give 2 values of y.

hence this is not a function.