Editing Right triangle (section)

===Area===
* <math>T=\frac{ab}{2}</math>
* <math>T=r_ar_b=rr_c</math>
* <math>T=r(2R+r)</math>
* <math>T=\frac{(2s-c)^2-c^2}{4}=s(s-c)</math>
* <math>T=|PA| \cdot |PB|,</math> where <math>P</math> is the tangency point of the [[Incircle and excircles of a triangle|incircle]] at the longest side <math>AB.</math><ref>{{citation
|last=Darvasi |first=Gyula
|journal=The Mathematical Gazette
|pages=72–76
|title=Converse of a Property of Right Triangles
|volume=89
|number=514
|date=March 2005|doi=10.1017/S0025557200176806
|s2cid=125992270
|doi-access=free
}}.</ref>