18 ? am not really sure tho its kinda difficult lol
Answer:
You have to make an equation
Make everything equal to 180 degrees because a triangle makes 180 degrees
If you need more help I can assist you
Step-by-step explanation:
1.
Answer:
these are supplementary
and x = 50
Step-by-step explanation:
one straight line = 180 degrees
there are only two angles making up this 180 degree line, so by definition they are supplementary
76 + 2x + 4 = 180
80 + 2x = 180
2x = 100
x = 50
