pls help!!!!
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sum of exterior angles of triangle = 360°
so,(10x-1)+(10x+7)+(9x+6) = 360°
=> 10x-1+10x+7+9x+6 = 360°
=> 29x+12 = 360°
=> 29x = 348°
=> x = 12°
hope it will be use full.
so,(10x-1)+(10x+7)+(9x+6) = 360°
=> 10x-1+10x+7+9x+6 = 360°
=> 29x+12 = 360°
=> 29x = 348°
=> x = 12°
hope it will be use full.
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