Area of a Triangle

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Section 8.4 Area of a Triangle
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Note s is the semi-perimeter.
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Proof of Herons Formula
Note Since Heron of Alexandria didnt have the
advantage of trigonometry, this is NOT the proof
he gave.
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Proof of Herons Formula
Note Since Heron of Alexandria didnt have the
advantage of trigonometry, this is NOT the proof
he gave.
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Proof of Herons Formula
Note Since Heron of Alexandria didnt have the
advantage of trigonometry, this is NOT the proof
he gave.
In a very similar manner, we can prove that