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garri49 [273]
3 years ago
11

I need help!! Please help me

Mathematics
1 answer:
Leni [432]3 years ago
4 0
18+x+x=180
180-18=162
162/2=81

X=81

Triangles always have a total of 180 degrees and the angles have the same variable which means they are the same number.
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