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Parallel lines never touch each other and remain equal distance from each other
two lines that do not touch each other
No; tangent circles touch each other at one point but concentric circles cannot not touch.
They can, so the question is irrelevant.
Yes , it is possible because you can put the tips of each pencil together almost creating a star but they all touch within the center.
8 with 3 left over
No, gas particles can touch each other when they collide.
Because you touch yourself at night. And they touch each other.
Europe, Asia, and Africa touch each other at the junction known as the tripoint where the countries of Russia, Georgia, and Turkey meet. This is the only place on Earth where three continents physically connect.
A single curve cannot touch "each other" since "each other" implies two curves.
by being stupid and get ontop of each other
You can arrange a meet between them. They can be comfortable with each other when they meet.
infinite mirrors
yes.
the bars normally do not touch each other.
3 glumps standing on each other with sticks is the boss