please answer this question as fast as you can because I don't know the answer who have answered it will get hundred points
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Answered by
1
Answer:
d.... 20° is the right answer......
Step-by-step explanation:
hope it will help you
please mark as brainlist plz plz plz plz plz
Answered by
2
option D)
20°
Step-by-step explanation:
A +B+C=180°
so,
B/2 + B + 3B =180°
A=B/2
B=B
C=3B
so,
9B=360°
B=40°
so,
A=B/2
A=20°
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