Cho tam giác ABC có góc A =50°; góc C =85°. Số đo góc B là:
Tổng các góc của tam giác
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Mathematics
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7th Grade
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Easy
Vân Bùi
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3 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
70°
45°
60°
40°
2.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
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3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Oz là tia phân giác của góc xOy. Biết góc xOz =30°. Số đo của góc xOy bằng:
45°
90°
120°
60°
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