Angle Bisector, Theorems and Problems  Table of Content
3




Proposed Problem 378.
Triangle, Incenter, Parallel to a side, Angle, Congruence. 

Proposed Problem 377.
Triangle, Internal Angle Bisector, Altitude. 

Proposed Problem 376.
Triangle, Excenter, Internal and External Angle Bisectors. 

Proposed Problem 375.
Triangle, Excenter, External Angle Bisectors. 

Proposed Problem 374.
Triangle, Incenter, Internal Angle Bisectors. 

Proposed Problem 368.
Triangle, 120 degrees, Angle bisectors, Perpendicular. 

Proposed Problem 340.
Triangle, Angle Bisectors, Perpendiculars, Distances. Exterior Point. 

Proposed Problem 339.
Triangle, Angle Bisectors, Perpendiculars, Distances. Interior Point. 

Proposed Problem 338.
Triangle, Circumcircle, Inscribed Circle, Exterior angle bisector,
Concyclic points. 

Proposed Problem 337.
Isosceles Trapezoid, Angle bisector, Parallel, Concyclic points. 

Proposed Problem 220. Right Triangle, Altitude, Angle Bisector,
Distance, Arithmetic Mean.


Proposed Problem 216. Quadrilateral, Angle Bisectors, and
Concurrency.


Proposed Problem 215.
Quadrilateral, Angle Bisectors, and Cyclic
Quadrilateral.


Sangaku Problem. The
incenters of four triangles in a cyclic quadrilateral form a rectangle.
Angle bisectors. 

Proposed Problem 214.
Quadrilateral and Angle Bisectors.

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