No two-dimensional figure can have less than three sides, except a circle which has either 1 side or an infinite number of sides!
There are two pairs of parallel sides in a rectangle - 1 pair of lengths, and 1 pair of widths.Therefore, 4 parallel sides!
No. For example, the two perpendicular sides can be adjacent; in this case, the two sides can be of different length; the lengths of the other two sides aren't unique either.The two perpendicular sides can also be the two opposite sides (i.e., side #1 and side #3, if you count consecutive sides); here, too, there are multiple possible solutions. Just try it out!
1 pair of parallel sides mean 1 pair of non-intersecting lines for example, squares, their lines don't touch when they up or down.
No because a trapezoid has only 1 pair of parallel sides whereas a parallelogram has 2 pairs of parallel sides.
Oil
Yes, because the two sides were very evenly matched for much of World War 1.
Austria-Hungary and Serbia
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Italy
both sides were locked in a stalement
They shared food, sang Christmas songs and played ball.
In world war one there were two sides: The Triple Entente contained The United Kingdom, Russia and France and The Triple Alliance contained Germany, Austria-Hungary and Italy. However, later on in the war, in April 1915 Italy changed sides to the Triple Entente.
Germany, Austria-Hungary, Italy-(later changed sides) Ottoman Empire Russia, United States, Great Britain, France, Italy-(after changed sides)
Italy was the only country to switch sides at the very beginning. Bulgaria and Russia switched sides late into the war.
8'000'000 on all sides
$1 trillion