From 9682ab19a121722d88a6454b019e2224729c8ace Mon Sep 17 00:00:00 2001
From: sloop <liyulongss@qq.com>
Date: Sun, 31 Jul 2016 06:47:50 +0800
Subject: [PATCH] Update

---
 CustomView/Advance/[9]Matrix_Basic.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/CustomView/Advance/[9]Matrix_Basic.md b/CustomView/Advance/[9]Matrix_Basic.md
index 4d6d076..d5b4ca4 100644
--- a/CustomView/Advance/[9]Matrix_Basic.md
+++ b/CustomView/Advance/[9]Matrix_Basic.md
@@ -190,9 +190,9 @@ $$)
 
 ### 3.旋转
 
-设一个点 A(x<sub>0</sub>, y<sub>0</sub>) ,绕原点旋转 θ 度, 假定点A距离原点距离为 r。
-
+设一个点 A(x<sub>0</sub>, y<sub>0</sub>) ,绕原点旋转 θ 度, 假定点A距离原点距离为 r, 旋转后为点 B(x, y) 如下:
 
+![](http://ww2.sinaimg.cn/large/005Xtdi2jw1f6cpceme7lj308c0dwq30.jpg)
 
 ![](http://latex.codecogs.com/png.latex?
 $$