用了minipage，怎么才能把底边对齐？

abababa

如题，代码如下：

2. \begin{figure}
3. \begin{minipage}{.3\textwidth}
4. \begin{tikzpicture}[scale=5,label style/.style={font=\scriptsize}, every node/.style={font=\scriptsize}]
5. \tkzDefPoints{0/0/A,1/0/B};
6. \tkzDefPointBy[rotation=center B angle -60](A)\tkzGetPoint{C}
7. \tkzCircumCenter(A,B,C)\tkzGetPoint{O}
9. \tkzDrawSegments[color=OliveGreen](A,B B,C C,A);
10. \tkzDrawSegments[color=Purple](O,A O,B O,C);
11. \end{tikzpicture}
12. \end{minipage}%
13. \begin{minipage}{.3\textwidth}
14. \begin{tikzpicture}[scale=5,label style/.style={font=\scriptsize}, every node/.style={font=\scriptsize}]
15. \tkzDefPoints{0/0/A,1/0/B};
16. \tkzDefPointBy[rotation=center B angle -60](A)\tkzGetPoint{C}
17. \tkzDefPointBy[rotation=center A angle 40](B)\tkzGetPoint{X}
18. \tkzInterLL(A,X)(B,C)\tkzGetPoint{D};
19. \tkzDefPointBy[rotation=center B angle 20](C)\tkzGetPoint{X}
20. \tkzInterLL(A,D)(B,X)\tkzGetPoint{E};
21. \tkzDefPointBy[rotation=center C angle 20](A)\tkzGetPoint{X}
22. \tkzInterLL(A,D)(C,X)\tkzGetPoint{F};
24. \tkzLabelAngle[color=Purple, pos=0.2](B,A,D){$40^\circ$}
25. \tkzLabelAngle[color=Purple, pos=0.3](C,B,E){$20^\circ$}
26. \tkzLabelAngle[color=Purple, pos=0.3](A,C,F){$20^\circ$}
28. \tkzDrawSegments[color=OliveGreen](A,B B,C C,A);
29. \tkzDrawSegments[color=Purple](A,D B,E C,F);
30. \end{tikzpicture}
31. \end{minipage}%
32. \begin{minipage}{.3\textwidth}
33. \begin{tikzpicture}[scale=5,label style/.style={font=\scriptsize}, every node/.style={font=\scriptsize}]
34. \tkzDefPoints{0/0/A,1/0/B};
35. \tkzDefPointBy[rotation=center B angle -60](A)\tkzGetPoint{C}
36. \tkzDefPointBy[rotation=center A angle 45](B)\tkzGetPoint{X}
37. \tkzDefPointBy[rotation=center B angle -45](A)\tkzGetPoint{Y}
38. \tkzInterLL(A,X)(B,Y)\tkzGetPoint{O};
39. \tkzInterLC(A,C)(O,C)\tkzGetFirstPoint{M};
40. \tkzInterLC(B,C)(O,C)\tkzGetSecondPoint{N};
42. \tkzLabelAngle[color=Purple, pos=0.2](B,A,O){$45^\circ$}
43. \tkzLabelAngle[color=Purple, pos=0.2](O,M,C){$30^\circ$}
45. \tkzDrawSegments[color=OliveGreen](A,B B,C C,A);
46. \tkzDrawSegments[color=Purple](O,A O,B O,C O,M O,N);
47. \end{tikzpicture}
48. \end{minipage}%
49. \end{figure}

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画了三个等边三角形，都是一样大，怎么才能让底边都在同一水平线上？

kuing

给的代码又不交待需要什么宏包，颜色又未定义，我怎么测试？

abababa

回复 2# kuing
哦，我又忘了，把那些包都放到其它文件里，就忘了复制了。

2. % 颜色，必须放在前面
3. \usepackage[dvipsnames, svgnames]{xcolor}
4. \usepackage{pgf,tikz}
5. \usepackage{float}
6. \usepackage{pgfplots,wrapfig}
7. \usepackage{graphicx}
8. \usepackage{subfigure}
9. \usepackage{tkz-euclide}
10. % 页边距设置
11. \usepackage[top=0.5in,bottom=0.5in,left=0.5in,right=0.5in]{geometry}

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kuing

用 \fbox 把 tikzpicture 框住，发现：

看来 minipage 默认是居中对齐，所以应该加参数 [ b ]，即

1. \begin{minipage}[b]{.3\textwidth}

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然而后两个图在绘制过程中在外面产生了看不见的点……
煮饭先，晚点再说……

abababa

回复 4# kuing

原来如此，那这样的话，用
\clip(0,0) rectangle (1,0.88);
把多余的东西剪裁下去就好了，经尝试后果然有效。

kuing

回复 5# abababa

那最下面那条边会不会没了一半（线变细）

kuing

回复 5# abababa

更简单的方法是在最后画线之前加 \pgfresetboundingbox 将边界归零。
测试代码：

1. \documentclass{article}
2. % 颜色，必须放在前面
3. \usepackage[dvipsnames, svgnames]{xcolor}
4. \usepackage{pgf,tikz}
5. \usepackage{float}
6. \usepackage{pgfplots,wrapfig}
7. \usepackage{graphicx}
8. \usepackage{subfigure}
9. \usepackage{tkz-euclide}
10. % 页边距设置
11. \usepackage[top=0.5in,bottom=0.5in,left=0.5in,right=0.5in]{geometry}
12. \begin{document}
13. \begin{figure}
14. \begin{minipage}{.3\textwidth}
15. \fbox{%for test
16. \begin{tikzpicture}[scale=5,label style/.style={font=\scriptsize}, every node/.style={font=\scriptsize}]
17. \tkzDefPoints{0/0/A,1/0/B};
18. \tkzDefPointBy[rotation=center B angle -60](A)\tkzGetPoint{C}
19. \tkzCircumCenter(A,B,C)\tkzGetPoint{O}
21. \tkzDrawSegments[color=OliveGreen](A,B B,C C,A);
22. \tkzDrawSegments[color=Purple](O,A O,B O,C);
23. \end{tikzpicture}}
24. \end{minipage}%
25. \begin{minipage}{.3\textwidth}
26. \fbox{%for test
27. \begin{tikzpicture}[scale=5,label style/.style={font=\scriptsize}, every node/.style={font=\scriptsize}]
28. \tkzDefPoints{0/0/A,1/0/B};
29. \tkzDefPointBy[rotation=center B angle -60](A)\tkzGetPoint{C}
30. \tkzDefPointBy[rotation=center A angle 40](B)\tkzGetPoint{X}
31. \tkzInterLL(A,X)(B,C)\tkzGetPoint{D};
32. \tkzDefPointBy[rotation=center B angle 20](C)\tkzGetPoint{X}
33. \tkzInterLL(A,D)(B,X)\tkzGetPoint{E};
34. \tkzDefPointBy[rotation=center C angle 20](A)\tkzGetPoint{X}
35. \tkzInterLL(A,D)(C,X)\tkzGetPoint{F};
37. \tkzLabelAngle[color=Purple, pos=0.2](B,A,D){$40^\circ$}
38. \tkzLabelAngle[color=Purple, pos=0.3](C,B,E){$20^\circ$}
39. \tkzLabelAngle[color=Purple, pos=0.3](A,C,F){$20^\circ$}
41. \pgfresetboundingbox
42. \tkzDrawSegments[color=OliveGreen](A,B B,C C,A);
43. \tkzDrawSegments[color=Purple](A,D B,E C,F);
44. \end{tikzpicture}}
45. \end{minipage}%
46. \begin{minipage}{.3\textwidth}
47. \fbox{%for test
48. \begin{tikzpicture}[scale=5,label style/.style={font=\scriptsize}, every node/.style={font=\scriptsize}]
49. \tkzDefPoints{0/0/A,1/0/B};
50. \tkzDefPointBy[rotation=center B angle -60](A)\tkzGetPoint{C}
51. \tkzDefPointBy[rotation=center A angle 45](B)\tkzGetPoint{X}
52. \tkzDefPointBy[rotation=center B angle -45](A)\tkzGetPoint{Y}
53. \tkzInterLL(A,X)(B,Y)\tkzGetPoint{O};
54. \tkzInterLC(A,C)(O,C)\tkzGetFirstPoint{M};
55. \tkzInterLC(B,C)(O,C)\tkzGetSecondPoint{N};
57. \tkzLabelAngle[color=Purple, pos=0.2](B,A,O){$45^\circ$}
58. \tkzLabelAngle[color=Purple, pos=0.2](O,M,C){$30^\circ$}
60. \pgfresetboundingbox
61. \tkzDrawSegments[color=OliveGreen](A,B B,C C,A);
62. \tkzDrawSegments[color=Purple](O,A O,B O,C O,M O,N);
63. \end{tikzpicture}}
64. \end{minipage}%
65. \end{figure}
66. \end{document}

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abababa

回复 6# kuing

确实变细了，后来把那个矩形(0,0)改成(0,-0.1)就好了。
回复 7# kuing

\pgfresetboundingbox 是不是就是先把之前定义的东西所占的画面清除掉，然后后面再draw，画出来什么就是什么，没画到的点就不管了，是不是这么理解？

色k

回复 8# abababa

yes