Me with this. it's due today and it's my final chance! i will give brain if you me.

see explanation

Step-by-step explanation:

∠a = 90° (as indicated by the square on the angle )

∠a, b and c form a straight angle = 180°, hence

b = 180° - (a + 59)°

   = 180° - (90 + 59)° = 180 - 149° = 31°

∠c is vertically opposite a + b = 90 + 31 = 121° ⇒ c = 121°

∠d is vertically opposite 59° ⇒ d = 59°

-2

7 - 9 = -2

reversed:

-2 + 9 = 7

answer: i guess 105 degrees?

step-by-step explanation: