Answer:
True
Step-by-step explanation:
Co planar means in the same plane
Think of a plane as a big piece of paper going out as far as the eye can see in all directions
ABC are in the same plane
1000000000000
2000^6/8000^2=1000000000000
5x = 8x+30
5x-8x+30 = 0
-3x=-30
x=-10
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