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Geometry · Chapter 10 · Lesson 10.7 · Printable PDF

Proving the Inscribed Angle Theorem Worksheet with Answer Key

4 problems on proving the inscribed angle theorem: the center on a side, inside or outside the angle, radii and isosceles triangles, a diameter case, and a student's proof of Case 3. 2 pages, with a worked answer key.

4 problems2 pagesanswer key
Printable Proving the inscribed angle theorem worksheet with answer key - Geometry (Page 1 PDF preview)
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Try one first: a free Chapter 1 worksheet (PDF, no sign-in).

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What's on the worksheet

  1. Find the inscribed angle and arc from where the center lies and the radii angles.
  2. Find angles in a circle with a 20 cm diameter and an inscribed angle of 30 degrees.
  3. Check a line of a student's Case 3 proof.
  4. Prove an angle difference equals half an arc when the center is outside the angle.

Teach it first

The free lesson teaches it with worked examples and practice problems.

Proving the inscribed angle theorem: the lesson ›

More Chapter 10 worksheets: Circles