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20 votes
20 votes
Please help me I'm about to have a break down and start crying. find

Please help me I'm about to have a break down and start crying. find-example-1
User Jesse Emond
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1 Answer

6 votes
6 votes

we have:


\text{arcAB}=\text{arcBC}=110

then


\text{arcAC}=360-\text{arcAB}-\text{arcBC}=360-110-110=140

so,


\begin{gathered} \angle ABC=(1)/(2)arcAC \\ \angle ABC=(1)/(2)(140) \\ \angle ABC=(140)/(2) \\ \angle ABC=70 \end{gathered}

answer:

User Baelnorn
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