MathDB

2015.8.3

Part of Kyiv City MO Juniors 2003+ geometry

Problems(1)

angle chasing, isosceles and angle bisectors (2015 Kyiv City MO 8.3)

Source:

9/2/2020
In the isosceles triangle ABCABC, (AB=BC) (AB = BC) the bisector ADAD was drawn, and in the triangle ABDABD the bisector DEDE was drawn. Find the values of the angles of the triangle ABCABC, if it is known that the bisectors of the angles ABDABD and AEDAED intersect on the line ADAD.
(Fedak Ivan)
geometryangle bisectoranglesisoscelesAngle Chasing