it's called vertices and there's 4.
http://wiki.answers.com/Q/How_many_verticals_are_o...

1. Construct a 4by4foot box by nailing the sides of the 1by8inch boards together. Cover the bottom of the box with several layers of newspaper for weed prevention. 2. Fill the
http://www.ehow.com/how_7549217_plantverticalsqu...

Use the distance formula to find the distance between (12, 3) and (3, 9) d = √[x_2x_1)²  (y_2y_1)²] d = √(81 + 144) d = √225 = 15. The side length
http://answers.yahoo.com/question/index?qid=201304...

In particular a function y = ƒ(x) can have at most 2 horizontal or
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