Question

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Answer 1

We know that an exterior angle of a triangle is equal to the sum of the opposite interior angles.....

2x = x +60

2x - x =60

x =60

so the exterior angle is 2x = 60×2 = 120

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Answer 2

Step-by-step explanation:

$hlo \: dear \: \\ by \:the \: property \: exterior \: angle \ \\ \\ 2x = 60 + x \\ 2x - x = 60 \\ = 60 \\ \\ i \: think \: it \: help \: you \: dear \: \\ mark \: is \: as \: brainlist \: please \\ and \: follow \: me$