SOLUTION: prove line AC is parallel to line BD if line AB is the diameter of circle O and lines AC BD are the tangents. I need to know how to show the statement and the reason of how you are

Question 370056: prove line AC is parallel to line BD if line AB is the diameter of circle O and lines AC BD are the tangents. I need to know how to show the statement and the reason of how you are proving it please! i really need to learn
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!

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Since AC is a tangent, then the angle between AC and AB is 90 degrees.
Same for the angle between BD and AB.

They are alternate interior angles and since they are equal, AC is parallel to BD.
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