samanthabutryn
05.11.2020 •
Mathematics
Help triangle sum therom and idk what to do
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Ответ:
The triangle sum theorem states that the 3 angles in a triangle equal 180.
Since we have a 90 degree angle shown, we can add it to the other two and set it equal to 180.
30+90+6x-12=180
108+6x=180
6x=72
x=12
Ответ:
answer:
it is the first one
step-by-step explanation:
i hope this