Answer: 111
Step-by-step explanation:
Angles in a quadrilateral add to 360 degrees, so:
[tex]121+58+70+x=360\\\\x=111[/tex]
Answer:
111
The sum of interior angles in a triangle is equal to 360:
121 + 58 + 70 + x = 360 add like terms
249 + x = 360 subtract 249 from both sides
x = 111 is the measure of the angle represented with x
