Answer:
D
Step-by-step explanation:
When you add all the the angles of a triangle, they will end up to be exactly 180 degree. When you add the three numbers A, B, and C end up with 180 degree, but D end up with 130 degree, therefore, D is the triangle that cannot exist.
Hope it helps :D
it should be 3x^2 +2
no
12 squared plus 5 squared=169
9+x<12
add 9 to an unknown number.
9+x
use the < less than symbol (instead of an equal sign) and write 12.
