Geometry: Angle Bisector Theorem, Online Education

Euclid's Elements Book VI, Proposition 3: Angle Bisector Theorem

The angle bisector BD of an angle in a triangle ABC divides the opposite side in the same ratio as the sides adjacent to the angle. See Proposed Problem 126. Incenter of the triangle.

 

Angle Bisector Theorem. Elearning.
 
  

Typography of Euclid's Elements Book VI, Proposition 3, Mobile Apps, iPad

Typography of Euclid's Elements Book VI, Proposition 3, Mobile Apps, iPad
 
  

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