In an isosceles triangle, the base angles are equal. The vertex angle is 40°. What are the base angles of the triangle? (Remember the sum of three angles is 180°)
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vertex angle=40
isosceles traingle have 2 sameangles and it's opposite sides are also same..let's those angle be x
40+2x=180
2x=180-40
2x=140
x=140/2
x=70
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