A triangular prism has two congruent bases. This question was posed and answered on "Are You Smarter Than a Fifth Grader?"
Euclid's fifth postulate: If two lines are drawn which intersect a third in such a way that the sum of the inner angles on one side is less than two right angles, then the two lines inevitably must intersect each other on that side if extended far enough.It can be rewritten: If two lines are drawn which intersect a third at angles of 90 degrees, the two lines are parallel and will not intersect each other.It has also been rewritten as Playfair's axiom:In a plane, given a line and a point not on it, at most one line parallel to the given line can be drawn through the point.
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One.
two Edit: Actually it has four - One vertical, one horizontal and two rotational lines at the diagonals !
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one fifth would be 2 pounds. 10/5=2 so two fifths would 10/5x2=4 two fifths of 10 pounds =4 pounds
Two tenths equals one fifth..
0.2 or two tenths of anything is one fifth (1/5) of it
3/5 of 2 pounds = 6/5 of a pound = 1.2 pounds.
Two 10th equals one fifth: 2/10 = 1/5
Two fifths divided by one fifth is two.
One-fifth of thirty-two is six and two-fifths.
1/5 mile = 1,056 feet.
One fifth plus one fifth is two fifths (2/5).
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two thousand pounds are = to one ton