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Section 11 – 3 Inscribed Angles. Objectives: To find the measure of an inscribed angle. Inscribed Angles & Intercepted Arcs :. Theorem 11 – 9 Inscribed Angle Theorem. The measure of an inscribed angle is half the measure of its intercepted arc.
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Section 11 – 3 Inscribed Angles Objectives: To find the measure of an inscribed angle
Theorem 11 – 9Inscribed Angle Theorem The measure of an inscribed angle is half the measure of its intercepted arc.
Example 1 Using The Inscribed Angle Theorem A) Find the values of a and b.
Example 1 Using The Inscribed Angle Theorem B) Find mPQR if =60
Example 1 Using The Inscribed Angle Theorem C) Find the values of x and y.
Corollaries to the inscribed angle theorem • Two inscribed angles that intercept the same arc are congruent • An angle inscribed in a semicircle is a right angle • The opposite angles of a quadrilateral inscribed in a circle are supplementary.
Example 2 Using Corollaries to Find Angles A) Find the measure of the numbered angle.
Example 2 Using Corollaries to Find Angles B) Find the measure of the numbered angle.
Example 2 Using Corollaries to Find Angles C) Find the measure of the numbered angle.
Example 2 Using Corollaries to Find Angles D) Find the value of a and b.