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Lesson 10-4: Inscribed Angles

Lesson 10-4: Inscribed Angles. Geometry CP Mrs. Mongold. - Inscribed angle : an angle inside the circle with sides that are chords and a vertex on the edge of the circle Inscribed angle = ½ intercepted arc -An inscribed right angle, always intercepts a semicircle

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Lesson 10-4: Inscribed Angles

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  1. Lesson 10-4: Inscribed Angles Geometry CP Mrs. Mongold

  2. -Inscribed angle: an angle inside the circle with sides that are chords and a vertex on the edge of the circle • Inscribed angle = ½ intercepted arc -An inscribed right angle, always intercepts a semicircle -If two or more inscribed angles intercept the same arc, they are congruent

  3. A Ex: Angle CAE = ½ arc CE X C E

  4. A Inscribed angle BAC intercepts a semicircle- so angle BAC =90 B C

  5. Inscribed angles GDF and GEF both intercept arc GF, so the angles are congruent D F E G

  6. Find the measure of angle X

  7. Find the measures of angles 1, 2, 3, and 4

  8. Find the measure of angle R

  9. Find the measure of angle I

  10. Find the measure of angle B

  11. Find the measure of angle D

  12. Find angle S and T

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