SOLUTION: geometry, area of a triangle given its 3 sides. need proof of Heron formula

Question 1041009: geometry, area of a triangle given its 3 sides.
need proof of Heron formula
Found 2 solutions by jim_thompson5910, ikleyn:
Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!

Here's one page that provides the proof

http://jwilson.coe.uga.edu/emt725/Heron/HeronProofAlg.html

Answer by ikleyn(52794)   (Show Source): You can put this solution on YOUR website!
.
Read these two lessons
    - Proof of the Heron's formula for the area of a triangle,
    - One more proof of the Heron's formula for the area of a triangle,
in this site.

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