Answer:
Explanation:
they are expecting you to know a few things.
first, that ∠x is asking for the interior angle of the labeled angle, here they call it 1 , so find that angle and look at the inside of the triangle, it's also referred to as the minor angle.
second, they are expecting you to know how many degrees it is around the interior or a triangle... do you know?
then , just take that number and subtract the two given numbers to find the final number , or the ∠1
got it?