Question

The vertical angle of an isocseles triangle is 100°.Find its base angle​

Answer 1

Answer:

40°

Step-by-step explanation:

As it is an isosceles triangle,the other two angles will be equal to each other

so

let the two equal sides be x

x+x+100=180   (Sum of all the angles)

2x+100=180

x=180-100/2

x=80/2

x=40

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Answer 2

Answer:

the answer is 40°

Step-by-step explanation:

let the two side as x

x+x+100=180°

2x+100=180°

x=100/2-180°

x=80-2

x=40°