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Mathematics 52 Online
saraesmithh:

Prove: 1 = 2 1. Segment RA=segment RB, RS||AB If lines ||, corresponding ∠'s = 2. ∠A = ∠B Substitution 3. ∠A = ∠2 If lines ||, alternate interior ∠'s = 4. ∠B = ∠1 Base ∠'s of isosceles triangle = 5. ∠1 = ∠2 Given

Vocaloid:

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