Answer:
x = 39
Explanation:
Sum of interior angles in a triangle = 180°
So
x + 39 + 102 = 180
x + 141 = 180
The value of X =39
The sum of angles in triangle is 180
X+Y+Z = 180
X+39+102 = 180
X+ 141 = 180
X = 180-141
X =39
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