Answer :

1. is D and two is correct
texaschic101
The interior angles of a triangle add up to 180 degrees.

1. 180 - (117 + 33) =
     180 - 150 =
      30....so < 1 = 30

2. 180 - (57 + 33) =
     180 - 90 =
      90....so < 1 = 90

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