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find area of triangle with 3 points known

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Elysi Cochin 2014-12-30

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评论： Sean de Wolski 2014-12-30

采纳的回答： Roger Stafford

please can someone help me find the area from the triangular region shown in the image...

http://oi59.tinypic.com/2jag575.jpg

i know the xmin, xmax and ymax values.... but with these values how to find the area of a triangle.... please do help me...

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Roger Stafford 2014-12-30

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If I interpret the figure correctly, the area is:

a = 1/2*(xmax-xmin)*ymax;

In general a triangle's area is one-half its base times its height.

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Sean de Wolski 2014-12-30

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Or

doc polyarea

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