Question

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The vertical angles of an isosceles triangle is 100. find its base angles
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Answer 1

Answer:

we know that an isosceles triangle has two side of same length and one side of different

the sum of the measurement of the angle of the triangle is 180

vino dad vertical angle of the triangle is 180 degree

let the base angle be X and X since they have the same value

so we get

x+x+100=280

2x+200=180

2x=280-100

2x=80

x=80/2

x=40°