2). Hình Chiếu Vuông Góc Của A Lên Các Trục Ox, Oy, Oz Theo Thứ Tự Là ...

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• Cho điểm A(4 ; -3 ; 2).

Câu 1:

Cho điểm A(4 ; -3 ; 2). Hình chiếu vuông góc của A lên các trục Ox, Oy, Oz theo thứ tự là M, N, P. Phương trình mặt phẳng (MNP) là:

A.

4x - 3y + 2z - 5 = 0

B.

3x - 4y + 6z - 12 = 0

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3x - 4y + 6z - 12 = 0

Ta có M = (4 ; 0 ; 0), N = (0 ; -3 ; 0), P = (0 ; 0 ; 2). Phương trình mp(MNP) viết theo đoạn chắn là:

C.

2x - 3y + 4z - 1 = 0

D.

Những câu hỏi này đến từ bài kiểm tra này. Bạn có muốn thực hiện bài kiểm tra thử không?

Trắc nghiệm Toán 12 Phần Hình học Chương 3 Phương Pháp Tọa Độ Trong Không Gian 20 phút - Đề số 4

• 20 phút
• 10 câu hỏi

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Một số câu hỏi từ cùng một bài kiểm tra

• Điều kiện cần và đủ của tham số m để phương trình:x2 + y2 + z2 - (2m + 2)x + 4my + (4m - 2)z + 2m + 7 = 0 là phương trình của một mặt cầu là:

• Trong không gian Oxyz cho đường thẳng d: . Đường thẳng nào sau đây vuông góc và cắt d?

• Trong không gian Oxyz cho hai điểm A(4 ; 1 ; -2) và B(5 ; 9 ; 3). Phương trình mặt phẳng trung trực của AB là:

• Trong không gian Oxyz cho các điểm A, B, C, D' có tọa độ như sau: A(1 ; 1 ; -6), B(0 ; 0 ; -2), C(-5 ; 1 ; 2), D'(2 ; 1 ; -1). Nếu ABCD.A'B'C'D' là hình hộp thì tọa độ điểm B' là:

• Cho điểm A(4 ; -3 ; 2). Hình chiếu vuông góc của A lên các trục Ox, Oy, Oz theo thứ tự là M, N, P. Phương trình mặt phẳng (MNP) là:

• Trong không gian Oxyz cho các điểm A, B, C, D' có tọa độ như sau: A(1 ; 1 ; -6), B(0 ; 0 ; -2), C(-5 ; 1 ; 2), D'(2 ; 1 ; -1). Nếu ABCD.A'B'C'D' là hình hộp thì khoảng cách từ A đến mp(BCC'B') là:

• Cho điểm A(0 ; 0 ; 4), B(2 ; 1 ; 0), C(1 ; 4 ; 0) và D(a ; b ; 0). Điều kiện cần và đủ của a, b để hai đường thẳng AD và BC cùng thuộc một mặt phẳng là:

• Trong không gian Oxyz cho mặt cầu (S) : x2 + y2 + z2 - 6x + 4y - 12 = 0. Mặt phẳng nào sau đây cắt (S) theo một đường tròn có bán kinh r = 3 ?

• Cho các điểm A(1 ; 1 ; 1), B(2 ; -1 ; 3), C(-1 ; -1 ; -2) và D(-3 ; 5 ; -3). Khoảng cách giữa hai đường thẳng AB và CD là:

• Cho hai điểm A(0 ; 0 ; 3), B(1 ; 2 ; 0). C thay đổi trên trục Ox. Giá trị nhỏ nhất của diện tích tam giác ABC là:

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  431 284 + 256 378

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