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artcher [175]
4 years ago
11

30 points!!! will give Brainliest!! Help pleaseee!!!!........

Mathematics
1 answer:
Phantasy [73]4 years ago
4 0
If AB||CD and AD||BC,

then,
two adjacent pair of angles forms a linear pair.

which means,
Angle B+Angle C = 180°
3x-9 + 39 = 180°
3x+30 = 180
3x = 150
x = 50°

Value of x is 50°.

!! Hope It Helps !!
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