De kiem tra CIIIHHoc 12

<span class='text_page_counter'>(1)</span>Trường THPT Nguyễn Hữu Thận Hä vµ tªn:............................................................................... Ngày kiểm tra:..............................Ngày trả bài:...................................... Líp 12B…..số:….. Điểm bằng số. KIÓM TRA 1 TIÕT M«n: HÌNH HỌC 12. Điểm bằng chữ. Nhận xét của Thầy, Cô giáo. Đề 1: Trong không gian Oxyz, cho bốn điểm A(1; 0; 0); B(0; 3; 0); C(0; 0; 6); D(1; 1; 1) và hai đường  x 1  2t  d1  :  y 2  t  z  3  3t .  x 2  t '  d 2  :  y  3  2t '  z 1  3t ' . thẳng (d), (d’) lần lượt có phương trình: ; 1) Viết phương trình mặt phẳng (ABC). Chứng tỏ A, B, C, D là 4 đỉnh của một tứ diện. 2) Tìm hình chiếu của điểm D lên (ABC). 3) CMR (d), (d’) chéo nhau. 4) Viết phương trình (  ) chứa (d) và song song với (d’). Tính khoảng cách giữa (d) và (d’). 5) Viết phương trình đường thẳng (  ) chứa trong (ABC) và cắt hai đường thẳng (d), (d’).. 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<span class='text_page_counter'>(2)</span> Trường THPT Nguyễn Hữu Thận Hä vµ tªn:............................................................................... Ngày kiểm tra:..............................Ngày trả bài:...................................... Líp 12B…..số:….. Điểm bằng số. KIÓM TRA 1 TIÕT M«n: HÌNH HỌC 12. Điểm bằng chữ. Nhận xét của Thầy, Cô giáo. Đề 2: Trong không gian Oxyz, cho bốn điểm A(1; 0; 0); B(0; 3; 0); C(0; 0; 6); D(1; 1; 1) và hai đường  x 1  2t  d1  :  y  2  t  z  3  3t .  x  2  t '  d 2  :  y  3  2t '  z 1  3t ' . thẳng (d), (d’) lần lượt có phương trình: ; 1) Viết phương trình mặt phẳng (BCD). Chứng tỏ A, B, C, D là 4 đỉnh của một tứ diện. 2) Tìm hình chiếu của điểm A lên (BCD). 3) CMR (d), (d’) chéo nhau. 4) Viết phương trình (  ) chứa (d) và song song với (d’). Tính khoảng cách giữa (d) và (d’). 5) Viết phương trình đường thẳng (  ) chứa trong (BDC) và cắt hai đường thẳng (d), (d’).. 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