Triangles ABC and ADC are isosceles with AB=AC and AD=DC. Point D is inside △ABC, ∠ABC=40°, and ∠ADC=140°. What is the degree measure of ∠BAD?A、20B、30C、40D、50E、60F、BC和△ADC是等腰三角形且AB=AC,AD=DC。点D在△ABC内,∠ABC=40°, ∠ADC=140°。问∠BAD的度数是多少?
Triangles ABC and ADC are isosceles with AB=AC and AD=D
C、 Point D is inside △ABC, ∠ABC=40°, and ∠ADC=140°. What is the degree measure of ∠BAD?
A、20
B、30
C、40
D、50
E、60
F、BC和△ADC是等腰三角形且AB=AC,AD=DC。点D在△ABC内,∠ABC=40°, ∠ADC=140°。问∠BAD的度数是多少?
发布时间：2025-07-23 21:57:40
