nianafaith nianafaith

17-10-2016
Mathematics

contestada

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

I need help with this I dont understand geometry at all lol class=

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texaschic101 texaschic101

17-10-2016

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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