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Checking back with Example 1 will show a consistent result for the triangle's Area using the conventional
PYTHAGOREAN THEOREM *

Find the length of the unknown side for the triangle shown in the illustration.
Once one grasps what has happened here, you 

* The importance of this mathematical formula is difficult to overemphasize as it will be a necessity for a significant number of problems throughout the remainder of the course/text. 

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