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BARSIC [14]
3 years ago
5

PLEASE PLEASE HELP!! I'm a bit behind with math, and you'd be doing me a huge huge favor! thank you so much in advance. (:

Mathematics
2 answers:
lys-0071 [83]3 years ago
3 0
All triangles equal 180 the exterior line and the missing corner are supplementary meaning that that 1=168
wel3 years ago
3 0
It is 168. Because the right angle is 90 degrees. The other one is 78. 78+98 = 168. So 180 degrees - 12 degrees is 168. 
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