Respuesta :

Answer:

x = 40

Step-by-step explanation:

A triangle angles add up to 180 so we can make an equation.

x + 60 + x + 40 = 180

Now we solve for x

2x + 100 = 180

2x = 80

x = 80/2

x = 40

(Since two angles are equal this is a isosceles triangle)

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