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4 votes
I need Helpppp my teacher sucks at teaching

I need Helpppp my teacher sucks at teaching-example-1
User NuAlphaMan
by
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1 Answer

7 votes

Answer: 10

Explanation:

Adjacent angles in a parallelogram are supplementary (add up to 180), so we know that the unknown angle equals 100°, since the adjacent angle equals 80°.

So, we can set up an equation:


11x-10=100\\11x=110\\x=10

User Evertvdw
by
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