pon14
pon14 pon14
  • 23-10-2017
  • Mathematics
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15 pls—i need a 2 column proof. thanks xx

15 plsi need a 2 column proof thanks xx class=

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Аноним Аноним
  • 23-10-2017
I haven't done proofs in a while, but one thing that might help is that only if two lines were parallel would angles 3 and 1 be congruent (3 is congruent to 2, which is congruent to 1, so they're all congruent to each other).
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