初中几何第二册第114页复习题三的第3题,是一道有关三角形角平分线的习题,这道题揭示了三角形两个内角平分线的交角与第三个角的关系.如果将此题条件中的内角平分线换成外角平分线,会有什么结论呢?内角平分线的交角与外角平分 The third question of the second review of junior high school page 114, question 3, is an exercise about the bisector of the triangle. This question reveals the relationship between the angle of intersection of the bisector of the two internal angles of the triangle and the third angle. The internal angle bisector in the question conditions is replaced by the external angle bisector. What will be the conclusion? The intersection angle of the internal angle bisector is equal to the external angle.