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astraxan [27]
3 years ago
11

The sum of the angle measures of any triangle is

Mathematics
1 answer:
romanna [79]3 years ago
3 0
Let's say that y is the unknown
180=2x+3+5x+1+y
180=7x+4+y
180-7x-4=y
176-7x=y=third angle
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