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haipro00102
2 năm trước
Cho tam giác ABC có Â=80°, phân giác Góc B và góc C cắt nhau tại I, gọi D là giao điểm của AI,BC a) Tính Góc BIC b) So sánh góc BID và Góc BAD Góc BIC và Góc BAC Giúp em với em cảm ơn ạ
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