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Geometry with McCarthy

Section 4-3: angle relationships in triangles. Geometry with McCarthy. Missy McCarthy Okemos High School Math Instructor. What you’ll learn. Angles in a triangle. Proof of Triangle Sum Theorem. Physical Proof. Example 1. What is a corollary?. Corollaries from sum theorem.

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Geometry with McCarthy

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  1. Section 4-3: angle relationships in triangles Geometry with McCarthy Missy McCarthy Okemos High School Math Instructor

  2. What you’ll learn

  3. Angles in a triangle

  4. Proof of Triangle Sum Theorem

  5. Physical Proof

  6. Example 1

  7. What is a corollary?

  8. Corollaries from sum theorem

  9. More about the

  10. Exterior Angles Theorem Plan for a proof:

  11. Example 2

  12. Third Angles Theorem

  13. Example 3

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