Let's make this into an equation.
x + (8x) = 180
x being the measure of the shorter angle
8x being the measure of the larger angle
So, 9x = 180
x = 20
Now, we replace x for 20
We are looking for the larger angle so we replace x for 20 from 8x
8 (20) = 160
So, the larger angle measures 160 degrees.
I hope this helps.
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