Please find x and the length of side AB.

x=

AB=

you have  no info

Step-by-step explanation:

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70 degrees

explanation:
first, it’s important to remember that all angles of a triangle equal 180 degrees. so, subtract 50 from 180 = 130. that means that the last two angles combined equal 130. next, it’s important to remember that a straight line is equal to 180 degrees. since you know that 120 out of that 180 degrees is shown, 180-120 = 60. that means that the bottom angle of the triangle is 60. 60+50 = 110. 180-110= 70. so, that last angle is equal to 70 degrees. hope this helped!!