Tiết: 31

LUYỆN TẬP
PHƯƠNG TRÌNH MẶT PHẲNG
ĐƯỜNG LÊN ĐỈNH
OLYMPIA
LUẬT CHƠI
1
2
3
KHỞI ĐỘNG
TĂNG TỐC
VỀ ĐÍCH
ĐƯỜNG LÊN ĐỈNH OLYMPIA
VÒNG 1
KHỞI ĐỘNG
Các đội cùng trả lời 7 câu hỏi, mỗi câu được suy nghĩ trong 20s, khi hết 20s các đội sẽ đưa phương án lựa chọn của mình.

Nếu trả lời đúng được 10 điểm. Trả lời sai không được điểm.

Sau 20s suy nghĩ, đội nào đưa phương án lựa chọn chậm hoặc không đưa ra được phương án sẽ không có điểm.
VÒNG 1: KHỞI ĐỘNG
ANS
TIME
20
ANS
TIME
20
Ghép cột
ANS
TIME
20
ANS
TIME
20

B.
C. D.
Phương trình mặt phẳng đi qua điểm M(1;2;-3) và vuông góc với AB, biết A(2;-1;0), B(3;-3;3) là
ANS
TIME
20

B.
C. D.
Cho mặt phẳng Điểm nào sau đây thuộc mặt phẳng (P)?
ANS
TIME
20
ANS
TIME
20

B. C. D.
Biết mặt cầu (S) có tâm I(2;0;-1) tiếp xúc với mặt phẳng
(P): 2x-y+2z+13=0. Tính bán kính của mặt cầu.
VÒNG 2
TĂNG TỐC
1. Có 2 câu hỏi trong phần tăng tốc . Các đội làm vào bảng phụ, hoàn thành xong treo lên bảng trong thời gian không quá 3 phút.

2. Đội làm đúng và nhanh nhất sẽ được 40 điểm. Đội làm đúng và nhanh thứ 2 sẽ được 30 điểm. Đội làm đúng và nhanh thứ 3 sẽ được 20 điểm.
Đội làm đúng và nhanh thứ 4 sẽ được 10 điểm. Đội làm sai hoặc chưa hoàn thành không có điểm.
VÒNG 2: TĂNG TỐC
TĂNG TỐC
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TG
Câu 1: Viết phương trình tổng quát của mặt phẳng trung trực của đoạn thẳng MN với M(2;3;7) và N(4;1;3).




.M
.I
Câu 1: Viết phương trình tổng quát của mặt phẳng trung trực của đoạn thẳng MN với M(2;3;7) và N(4;1;3)
N
P)
TĂNG TỐC
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TG
Câu 2: Cho ba điểm A(5;1;3), B(5;0;4), C(4;0;6).Viết phương trình mặt phẳng (ABC) .
A.
.C
.B
phương trình mặt phẳng (ABC) :
-2(x-5)-(y-1)-(z-3)=0
-2x-y-z+14=0
Câu 2: Cho A(5;1;3), B(5;0;4), C(4;0;6). Viết phương trình mặt phẳng (ABC)
VÒNG 3
VỀ ĐÍCH
1. Có 5 câu hỏi trong phần về đích. Mỗi đội sẽ chọn 1 câu hỏi sau đó làm vào bảng phụ và treo lên bảng trong thời gian không quá 4 phút.

2. Đội chơi làm đúng sẽ được 30 điểm. Đội chơi làm sai hoặc chưa hoàn thành thì đội chơi khác được bổ sung, nếu đúng được 30 điểm. Đội làm sai hoặc chưa hoàn thành không có điểm
VÒNG 3: VỀ ĐÍCH
Câu 1
Câu 3
Câu 2
Câu 4
Câu 5
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TG
Câu 1: Mặt phẳng (P) chứa 2 điểm A(1;-1;2), B(2;1;1) và vuông góc với (Q): x+y+z-1=0 có phương trình là
A. 3x-2y-z-3=0. B. -2x+y+z-2=0. C.-x+y=0 . D.3x-2y-z+3=0.
VỀ ĐÍCH
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TG
VỀ ĐÍCH
Câu 2: Cho 2 mặt phẳng (P): 3x-2y+2z+7=0 và (Q): 5x-4y+3z-1=0.
Mặt phẳng đi qua gốc tọa độ đồng thời vuông góc với (P) và (Q) có phương trình là
A. 2x-y-2z=0. B. 2x-y+2z=0. C.2x+y-2z=0 . D.2x+y-2z+1=0.
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TG
VỀ ĐÍCH
Câu 3: Cho mặt cầu (S) có tâm I(3;2;-1) và điểm A(2;1;2). Mặt phẳng tiếp xúc với (S) tại A có phương trình là
x+y+3z-9=0. B. x+y-3z+3=0.
C. x+y-3z-8=0 . D. x-y-3z+3=0.




Câu 3: Cho mặt cầu (S) có tâm I(3;2;-1) và điểm A(2;1;2). Mặt phẳng tiếp xúc với (S) tại A có phương trình là
x+y+3z-9=0. B. x+y-3z+3=0.
C. x+y-3z-8=0 . D. x-y-3z+3=0.
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TG
VỀ ĐÍCH
 




 
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TG
VỀ ĐÍCH
 
R
P
r
 
ĐỘI CHIẾN THẮNG
Chúc mừng
Củng cố, hướng dẫn về nhà.

- Tìm phương trình tổng quát của mặt phẳng.
- Bài toán liên quan đến khoảng cách từ một điểm đến một mặt phẳng
- Bài toán liên quan giữa mặt phẳng và mặt cầu.
Củng cố, hướng dẫn về nhà.


Củng cố, hướng dẫn về nhà.


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