Match the reasons with the statements given. Given:
ABR
=
| |
Prove:
1 = 2

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

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