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在〇里填上“＞”“＜”或“=”
$\frac{1}{2}$__$\frac{3}{4}$ $\frac{3}{4}$__$\frac{11}{20}$ $2\frac{2}{7}$__$2\frac{5}{21}$
$\frac{3}{5}$__$\frac{7}{10}$ $\frac{5}{6}$__$\frac{4}{9}$ $\frac{6}{11}$__$\frac{8}{33}$
$\frac{5}{6}$__$\frac{3}{4}$ $\frac{5}{7}$__$\frac{4}{5}$ $1\frac{7}{12}$__$1\frac{5}{6}$
$\frac{2}{5}$__$\frac{7}{20}$ $\frac{5}{9}$__$\frac{7}{8}$ $2\frac{3}{8}$__$2\frac{5}{6}$
$\frac{5}{8}$__$\frac{7}{9}$ $\frac{3}{20}$__$\frac{1}{5}$ $3\frac{1}{7}$__$2\frac{7}{8}$
$\frac{4}{5}$__$\frac{6}{7}$ $\frac{7}{12}$__$\frac{5}{8}$ $\frac{5}{12}$__$\frac{1}{2}$
在〇里填上“＞”“＜”或“=”
$\frac{1}{2}$__$\frac{3}{4}$ $\frac{3}{4}$__$\frac{11}{20}$ $2\frac{2}{7}$__$2\frac{5}{21}$
$\frac{3}{5}$__$\frac{7}{10}$ $\frac{5}{6}$__$\frac{4}{9}$ $\frac{6}{11}$__$\frac{8}{33}$
$\frac{5}{6}$__$\frac{3}{4}$ $\frac{5}{7}$__$\frac{4}{5}$ $1\frac{7}{12}$__$1\frac{5}{6}$
$\frac{2}{5}$__$\frac{7}{20}$ $\frac{5}{9}$__$\frac{7}{8}$ $2\frac{3}{8}$__$2\frac{5}{6}$
$\frac{5}{8}$__$\frac{7}{9}$ $\frac{3}{20}$__$\frac{1}{5}$ $3\frac{1}{7}$__$2\frac{7}{8}$
$\frac{4}{5}$__$\frac{6}{7}$ $\frac{7}{12}$__$\frac{5}{8}$ $\frac{5}{12}$__$\frac{1}{2}$
答案：
按要求画图：将图形1绕点O顺时针旋转180°
答案：
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