What is the opposite of the word "steep", as in "that staircase is at a steep incline"?
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Steep would refer to the angle, reguardless of "going up or down".  the opposite you are probably thinking of is "that staircase has a steep decline"
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Taciturn   quiet or not inclined to talk (adj)\n\nLabyrinth  a maze  (noun)\n\nMake a list.  Number one on the list...Buy a dictionary.
977594
The term you are looking for is "palindrome".
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Just remember SOH CAH TOA\n\nSin: opposite/hypotenuse\n\nCos: adjacent/hypotenuse\n\nTan: opposite/adjacent
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1. "linking" verb.\n\n3.  A two letter word for direction could be "up".\n\n2.  I am not exactly sure what you mean by the "8 letter word ...."\n\nI hope this helps.
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zero elevation !!!! you do know this means you are not elevated don't you.....
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Stairs.\n\n30 to the first step, 20 to the second, 10 to the third and then back down (20 second, 30 first).  Do that until you can no longer make it to the first step.
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agreement\n\nfor more antonyms, checkout:\nhttp://thesaurus.reference.com/search?q=contradiction
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Yes it's true. It is called Magnetic Hill ,in New Brunswick, Canada. It is neither magnetic nor a hill, but an optical illusion that makes one seem to be going up hill when in truth one is actually coasting down grade. It is all due to the surrounding countryside.
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a good way to describe slope is change in one variable with respect to another.  Thus the rise over run analogy.  Rise is vertical (y-axis) while run is horizontal (x-axis).  In real world applications, the horizontal is oftentimes time, but not necessarily, so slope is often a change in time.
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the opposite of the speed of light :)
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You have "windward" and "leeward" - "leeward" slopes face away from the prevailing wind direction.
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If the opposite of "pro" is "con", what is the opposite of progress?\n\nCongress has no shame!
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Slope equals rise over run.\nGee, this sounds like fun.\ny = mx + b\nWhat a wonderful sight to see.\nSlope equals rise over run.\nNow my poem is done.
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The opposite is called Imperial.
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I'll give it a shot using a table as an example.\nBelow the table - anywhere lower than the top of the table. If your waist is the height of the table, then your knees are below the table.\nBeneath the table - if you pick up the table and put it down on the floor, the floor is beneath the table.\nUnderneath the table - anywhere below the table, as long as if that point went straight up, it would hit the bottem of the table.\n\nAnother way to say it -\nBelow - is a distance. 10 feet below sea level.\nBeneath - is a position. You're beneath an umbrella.\nUnderneath - something is on top. You're in a cave underneath the ground.
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I think by steepness, you mean slope.  So, the steepness (slope) is the rise (vertical side) over the run (horizontal side).  For example the slope of a 3-4-5 triangle is 3/4 if 3 is the vertical side and 4/3 if 4 is vertical side.\n\nOf course the slope cold be negative depending on the way the triangle is facing :-)