HERON'S FORMULA:
A Geometric Proof
HERON'S FORMULA:
A Geometric Proof
See Also: Problem Solving with Heron's Formula
Review:
1. The incircle and its properties.
2. An excircle and its properties.
3. The area of the triangles is rs, where r is the inradius and s the semiperimeter.
4. The points of tangency of a circle inscribed in an angle are equidistant from the vertex.
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