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I need a good grade pls help

I need a good grade pls help-example-1
User Surez
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the answer is 77° because you find the other degree that is not marked with an x by subtracting 180-123 getting 57. add the 57+46=103 all the angles in a triangle add up to 180 so 180-103= 77°
I need a good grade pls help-example-1
User Kscherrer
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