Verified Answer :

zeen

Are you talking about a triangle?
If so, the angles in a triangle add up to 180.
70 + 30 = 100
So c must be 80 because 100 + 80 = 180.
x = 80

prazie1

A + B + C = 180
30 + 70 + X =180
100 + X =180
X =180 - 100
X =80.

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