Respuesta :

Solution

Given

m∠ABG = 12x and

m∠HCF = 11x + 9

m

m

Thus

11x + 9 = 12x

12x -11x = 9

x = 9

But < HCF = 11x + 9

= 11(9) + 9

=99 + 9

=108

The answer is 108 degrees

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