Respuesta :

zoeyangelee

Answer:

108°

Step-by-step explanation:

x = 9

So x + 63° = 72°

So is 8x

So 8x = 72°

Multiply 72° by 2

144°

Now subtract 144° from 360°

The answer is 216°

Now divide by 2

108°

Hope this helped :)

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