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4 votes
Please can any one answer my question

Please can any one answer my question-example-1
User Allen Pike
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1 Answer

6 votes
A + B + C = 360° because they are outside angles. Since 1, 2, and 3, are equivalent, so are A, B, and C. 1, 2, and 3 equal 180, so A, B, and C equal 360.
User FatDaemon
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