**HW: Proofs from Handout with 2-5 and 2-6 practice (given to you yesterday!). Read the 2 sections. Study the examples!**

**Chapter 2 Theorems: MEMORIZE**

**Theorem 2-1 (pg101): ****Congruence of segments is reflexive, symmetric, and transitive.**

**OR**

**1)**** ****Reflexive Property of congruent segments**

**2)**** ****Symmetric Property of congruent segments**

**3)**** ****Transitive Property of congruent segments**

**Theorem 2-2 (pg107): ****If two angles form a linear pair, then they are supplementary angles.**

**Theorem 2-3 (pg107): ****Congruence of angles is reflexive, symmetric, and transitive.**

**OR**

**1)**** ****Reflexive Property of congruent angles**

**2)**** ****Symmetric Property of congruent angles**

**3)**** ****Transitive Property of congruent angles**

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**Theorem 2-4 (pg108): ****Angles supplementary to the same angle or to congruent angles are congruent.**

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**Theorem 2-5 (pg109): ****Angles complementary to the same angle or to congruent angles are congruent.**

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**Theorem 2-6 (pg109): ****All right angles are congruent**

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**Theorem 2-7 (pg109): ****Vertical angles are congruent**

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**Theorem 2-8 (pg110): ****Perpendicular lines intersect to form four right angles.**

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