Answer :

I think 40, because a triangle is always 189 degrees in total, the other 2 make 100, so we have 80 left. 40 multiples by 2 is 80. 100+80= 180 which is the whole triangle
ciaracrudup
It would be 80! The reason for this is because it has to total to 180! Let me know if this was right or not!

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