exterior angle theorem
A) 110°
B) 34°
C) 23°
D) 30°
![exterior angle theorem A 110 B 34 C 23 D 30 class=](https://us-static.z-dn.net/files/de8/6a2e8d0479f1680c5e9690e467e9ac5a.png)
Answer:
D) 30°
Step-by-step explanation:
By exterior angle theorem:
? = 70° - 40°
? = 30°