1
It is still a triangle.
A circle or a square.
Yes.
In mathematics, an upside down A means "for all".
The spelling is upside down, which is hyphenated upside-down when used as an adjective.
It is still a triangle.
A circle or a square.
pig on these are both words that look different but are still a word upside down.
yes
yes
Yes.
turn upside down and stay still
Yes.
Yes.
You'd still be on the ground due to the gravitational pull that is helping you. So that's the answer; the world can't go upside down
To symbolise distress. If you simply turn it upside down then it would symbolise distress, if you rotate it however it is still the same.
Sadly, no. But there is talk of a movie in the works...