Cho tam giác ABC vuông cân tại A. Trên cạnh AC lấy điểm D, từ C kẻ CM vuông góc với BD cắt BA kéo dài tại N. a) Viết tất cả các tam giác đồng dạng với tam giác ABD. b) Góc AMN có số đo bằng? c) Lấy I,K lần lượt là trung điểm của BC và DN. Góc KAI có số đo bằng? Giúp với ạ

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