The lines ⟷XW and ⟷YZ are parallel.
True
False
In the previous question, the lines ⟷XW and ⟷YZ are parallel.
The lines ⟷XW and ⟷YZ are parallel, find the angle ∠DCW
When 7xy+5yz−3zx, 4yz+9zx−4y and −3xz+5x−2xy are added, we get 5xy+9yz+3zx+5x−4y.
Lines parallel to x axis are represented by x=±k