Answer: 70 degrees
Step-by-step explanation: Measures 5 &' 6 combined are equal to 180 degrees so Measures 1 &' 2 combined have to be equal to 180. Don't get it? Measures 6 and 2 are both 110 degrees but measure 5 is 70 because a line is only 180 degrees, making measure 2 equal to 110 degrees.