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dolphi86 [110]
4 years ago
5

What is the measure of angle B?

Mathematics
2 answers:
Musya8 [376]4 years ago
6 0
Angle B is equal to 30°.
bazaltina [42]4 years ago
3 0
40+2x-30+x+20=180
X=50
Angle b= 2(50)-30=70
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