Question

pls send fast its urgent

Answer 1

Base angles=x
Vertex angle=40
x+x+40=180        (Angle sum property)
2x+40=180
2x=140
x=70
The base angles are 70 each.

Answer 2

let the base angeles be x
x+x+40=180
=2x+40=180
=2x=140
x=70
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