MathDB

3

Part of 1967 Poland - Second Round

Problems(1)

angle bisector wanted

Source: Polish MO second round 1967 p3

8/28/2024
Two circles touch internally at point AA. A chord BC BC of the larger circle is drawn tangent to the smaller one at point D D . Prove that AD AD is the bisector of angle BAC BAC .
geometryangle bisector