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ththe sum of all angles of a triangle is 180 ;
2x+80+y=180 ..............1
but by the remote interior angle theorem
z=2x+80.............2&
3x=2x+y...............3
from 1&3
3x=100
×=100/3
×=33
now put the value of ×in the equation 1
66+80+y=180
y=34
not put the value of x in equation 2
z=146
2x+80+y=180 ..............1
but by the remote interior angle theorem
z=2x+80.............2&
3x=2x+y...............3
from 1&3
3x=100
×=100/3
×=33
now put the value of ×in the equation 1
66+80+y=180
y=34
not put the value of x in equation 2
z=146
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