Mathematics, 25.07.2021 06:00 Disd112984

Cho hình thang ABCD (AB song song CD; AB>CD) các tia phân giác A và D cắt nhau tại I các tia phân giác B, C cắt nhau tại J
a) chứng minh AI vuông góc với DI và BJ vuông góc CJ
b gọi E giao điểm AI và BJ giả sử Ethuộc cạnh CD, chứng minhCD=AD+BC

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Cho hình thang ABCD (AB song song CD; AB>CD) các tia phân giác A và D cắt nhau tại I các tia phâ...

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Cho hình thang ABCD (AB song song CD; AB>CD) các tia phân giác A và D cắt nhau tại I các tia phân giác B, C cắt nhau tại J a) chứng minh AI vuông góc với DI và BJ vuông góc CJ b gọi E giao điểm AI và BJ giả sử Ethuộc cạnh CD, chứng minhCD=AD+BC

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Another question on Mathematics

Cho hình thang ABCD (AB song song CD; AB>CD) các tia phân giác A và D cắt nhau tại I các tia phân giác B, C cắt nhau tại J
a) chứng minh AI vuông góc với DI và BJ vuông góc CJ
b gọi E giao điểm AI và BJ giả sử Ethuộc cạnh CD, chứng minhCD=AD+BC