Answer:
68
Step-by-step explanation:
We know the sum of interior angles for a quadrilateral must equal 360, so we can create the following equation
[tex]55+117+120+x=360[/tex]
Simplify
[tex]292+x=360[/tex]
Subtract 292 from both sides
[tex]x=68[/tex]
Answer:
68
Step-by-step explanation:
The sum of the interior angles of a quadrilateral is 360. The sum of the interior angles or a triangle is 180. If you think about a rectangle, you can cut that up into two triangles, so 180 + 180 = 360.
Now subtract out the 3 angles that you know
360-55-117-120 = 68
