A ৮০°,১২০°,১৬০°
B ৪০°,৬০°,৮০°
C ৩০°,৪৫°,১৫°
D ৫০°,৩০°,৯০°
Correct Answer: Option B
2x+3x+4x=9x
9x=1800
x=200
2x=400
3x=600
4x=800
Download our app for free and access thousands of MCQ questions with detailed solutions