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Lesson 7 Practice Problems
Problem Statement
Line is tangent to a circle with diameter . Explain why the measure of angle must equal the measure of angle .
Solution
The measures must be equal because they are both right angles. Angle is a right angle because it is the inscribed angle of a diameter. Angle is a right angle because a tangent line to a circle is always perpendicular to its radius.
Problem Statement
Line is perpendicular to the circle centered at with radius 1. The length of is 1.5. Find the length of segment .
Solution
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Teacher Guide
