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zzz [600]
3 years ago
5

I need help with this... I don't understand geometry at all lol.

Mathematics
1 answer:
Kitty [74]3 years ago
8 0
1. vertical angle theorem and triangle angle sum theorem

2. The sum of the interior angles of a triangle = 180
    so < x = 180 - (70 + 30) = 180 - 100 = 80
    and < y is a vertical angle to < x...and vertical angles are equal..
    so < y = 80
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