Question

isosceles triangle a base angle is four times its Vertical angle find all the angles of the triangle​

Answer 1

Answer:

1) in an isosceles triangle base angles are equal

let the vertical angle =x

base angles = 4x and 4x

sum of three angles are equal to 180degree in any triangle

x+4x+4x=180

9x =180

x=180/9

x=20

therefore

three angles 20,80,80

2)let

the base angle = a

vertical angle= a+15

sum of three angles =180

a+a+a+15=180

3a=180-15

3a=165

a=165/3

a=55

therefore

three angles are

a,a,a+15

55,55,70

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

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