c) $C D \perp(S A D)$

Q: c) $C D \perp(S A D)$

A. True B. False <figure class="image"><img src="https://docdn.giainhanh.io/media/test/86e64e7cfc69e61b5166f0b83180c16e.png" alt="image.png" srcset="https://docdn.giainhanh.io/media/test/b9599ad69accf4077c341b2ae875b707.png 173w" sizes="100vw" width="173"></figure>$\begin{array}{l}\left\{\begin{array}{l}B D \perp A C \\ B D \perp S A(S A \perp(A B C D))\end{array} \Rightarrow B D \perp(S A C)\right. \\ \left\{\begin{array}{l}B D \perp(S A C) \\ S C \subset(S A C)\end{array} \Rightarrow B D \perp S C\right. \\ \left\{\begin{array}{l}C D \perp A D \\ C D \perp S A\end{array} \Rightarrow C D \perp(S A D)\right. \\ \left\{\begin{array}{l}A H \perp S O \\ A H \perp B D(B D \perp(S A C))\end{array} \Rightarrow A H \perp(S B D) \Rightarrow A H \perp S B\right.\end{array}$

Question

Accepted Answer

A. True
B. False

$\begin{array}{l}\left\{\begin{array}{l}B D \perp A C \ B D \perp S A(S A \perp(A B C D))\end{array} \Rightarrow B D \perp(S A C)\right. \ \left\{\begin{array}{l}B D \perp(S A C) \ S C \subset(S A C)\end{array} \Rightarrow B D \perp S C\right. \ \left\{\begin{array}{l}C D \perp A D \ C D \perp S A\end{array} \Rightarrow C D \perp(S A D)\right. \ \left\{\begin{array}{l}A H \perp S O \ A H \perp B D(B D \perp(S A C))\end{array} \Rightarrow A H \perp(S B D) \Rightarrow A H \perp S B\right.\end{array}$

Đề thi giữa kì 2 (Cấu trúc mới) - Đề số 23 - MĐ 10951