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Verified Answer :

  1. Congruent, 30 degrees
    4. 2x+30+50=180
    80+2x=180
    x=50
    2x=100
    5. 3x-13+58=90, so 3x+45=90
    3x=45 x=15
    3x-13=3(15)-13
    =45-13
    =32 degrees