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43 votes
43 votes
X=
//////////////////////////////

X= //////////////////////////////-example-1
User Dmitry Ryadnenko
by
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1 Answer

20 votes
20 votes

Answer:
x=90

Explanation:

Using the alternate exterior angles theorem,


180-x=x\\\\180=2x\\\\x=90

User Janadari Ekanayaka
by
2.9k points