Answer:

Step-by-step explanation:


Answer:
B
Step-by-step explanation:
Answer:
able to be believed; convincing. hope this helped
Angle a +angle b = 180 degrees
angle a + angle a + 30 = 180
2*angle a = 150
angle a = 75degrees
angle b = 75+30 = 105 degrees
now, angle b +angle c = 180
so, angle c = 180-105 = 75 degrees