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Published byBeatriz Orsborn Modified over 5 years ago

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**Bellwork Do the following problem on a ½ sheet of paper and turn in.**

The ratios of three angles in a triangle are 8:6:4. Find the value of x and classify the triangle by sides and angles.

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**7.2 Two Proof Oriented Triangle Theorems**

Students will be able to apply the AAS and No Choice Theorems.

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**No Choice Theorem—Toolbox!**

Prove: If two angles of one triangle are congruent to two angles of another triangle, then the third angles are congruent. An Algebraic Proof:

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Example 1 Given: Prove: VBYZ is a parallelogram.

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Example 2 Given: O is the center Prove:

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Homework pg. 304 #3, 4, 6, 9, 10, 14, 16

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D B C Skip A skip B A D C C (repeat)

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