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Find the measure of an inscribed angle.

Learn to find inscribed angle measures in string art designs by understanding intercepted arcs and subtended angles. Explore properties of inscribed angles to solve various problems in circles. Practice calculating arc measures and inscribed angle values in different scenarios.

rachelgwilliams
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Find the measure of an inscribed angle.

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  1. Objectives Find the measure of an inscribed angle. Use inscribed angles and their properties to solve problems.

  2. Vocabulary inscribed angle intercepted arc subtend

  3. String art often begins with pins or nails that are placed around the circumference of a circle. A long piece of string is then wound from one nail to another. The resulting pattern may include hundreds of inscribed angles.

  4. An _______________is an angle whose vertex is on a circle and whose sides contain chords of the circle. An _______________consists of endpoints that lie on the sides of an inscribed angle and all the points of the circle between them. A chord or arc __________an angle if its endpoints lie on the sides of the angle.

  5. Example 1A: Finding Measures of Arcs and Inscribed Angles Find each measure. mPRU

  6. mSP Example 1B: Finding Measures of Arcs and Inscribed Angles Find each measure.

  7. Find mABD and mBC in the string art. Example 2

  8. Example 3A: Finding Angle Measures in Inscribed Triangles Find a.

  9. Example 3B: Finding Angle Measures in Inscribed Triangles Find mLJM.

  10. Example 4: Finding Angle Measures in Inscribed Quadrilaterals Find the angle measures of GHJK. Step 1 Find the value of b.

  11. Example 4 Continued Step 2 Find the measure of each angle.

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