In Review Exercises 27 to 29, give a proof for each statement.
To Prove:
Concept:
Theorem 6.2.3: The radius (or any other line through the center of a circle) drawn to a tangent at the point of tangency is perpendicular to the tangent at that point.
Calculation:
Given that
By theorem 6.2.3,
So,
Because vertically opposite angles are equal,
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