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平行四边形

两组对边分别平行

四边都相等的四边形

局限的可识别的形状

特殊平行四边形

只有一组对边平行图形

正三角柱为半正五面体

边和四个相等组合成

各内角相等六边相等

棱长相等的长方体

圆与方形结合体

有五条边和角的多边形

无空隙又不重叠

<div class="opr-recommends-merge-morelists">
                        
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                                                                            <div class="opr-recommends-merge-p-new">
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                    <span class="opr-recommends-img-border-span c-img-radius-large"></span>
                    <img 
                        class="c-img c-img2 c-img-radius-large opr-recommends-merge-img"
                                                    data-img="https://t10.baidu.com/it/u=884360661,1262018783&fm=58"
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                <a class="opr-recommends-merge-mask-new c-img-radius-large" target="_blank" href="/s?tn=vsearch&wd=%E4%B8%89%E6%A3%B1%E9%94%A5&usm=1&ie=utf-8&rsv_cq=&rsv_dl=0_right_recommends_merge_21102&rsv_pq=ae11f7a200e7af24&oq=%E4%B8%83%E5%B7%A7%E6%9D%BF&rsv_t=b21d22%2BaijRLstUacWktrGk%2Fa%2BRvVghlNn3LGIBT9AIN9oL1yH3ZM%2BE4ZUzsIg&euri=7cd64d702416440c819867c2cdacfe05"></a>                            </div>
            <div class="opr-recommends-merge-img-titleline-height"><a target="_blank" class="c-font-medium inc_rs_a" title="三棱锥" href="/s?tn=vsearch&wd=%E4%B8%89%E6%A3%B1%E9%94%A5&usm=1&ie=utf-8&rsv_cq=&rsv_dl=0_right_recommends_merge_21102&rsv_pq=ae11f7a200e7af24&oq=%E4%B8%83%E5%B7%A7%E6%9D%BF&rsv_t=0895CKpLqtNz68MnG0G3IY51f21%2BCS8xz21mV4mYwAXs3MV7UqGMmvaU0XSWPA&euri=7cd64d702416440c819867c2cdacfe05">三棱锥</a></div>
                                                        </div>

<div class="c-span2  opr-recommends-merge-item-new " data-click="{'rsv_re_ename':'勾股定理','rsv_re_uri':'ba6cf6a140894593b2cbeb9f0574f2fc'}">
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                    <span class="opr-recommends-img-border-span c-img-radius-large"></span>
                    <img 
                        class="c-img c-img2 c-img-radius-large opr-recommends-merge-img"
                                                    data-img="https://t12.baidu.com/it/u=1545308999,3681369896&fm=58"
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                                                                            <div class="opr-recommends-merge-p-new">
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            <div class="opr-recommends-merge-img-titleline-height"><a target="_blank" class="c-font-medium inc_rs_a" title="球体" href="/s?tn=vsearch&wd=%E7%90%83%E4%BD%93&usm=1&ie=utf-8&rsv_cq=&rsv_dl=0_right_recommends_merge_21102&rsv_pq=ae11f7a200e7af24&oq=%E4%B8%83%E5%B7%A7%E6%9D%BF&rsv_t=abf4uJZUIXSJ4LvUYT%2Bx80Ib1uZKR4H5R4ZiAMr%2FyAJStaFFsR5GlpUbrg78Yw&euri=31fae8d9a96a470a81ba52fe14b36c81">球体</a></div>
                                                        </div>

<div class="c-span2  c-span-last opr-recommends-merge-lastspan opr-recommends-merge-item-new " data-click="{'rsv_re_ename':'乘法口诀','rsv_re_uri':'4a66a9f768854cf0b9c9e98d8b4da69a'}">
                                                                            <div class="opr-recommends-merge-p-new">
                <a target="_blank" class="c-img c-img2 c-img-s c-img-radius-large opr-recommends-new-vertical" href="/s?tn=vsearch&wd=%E4%B9%98%E6%B3%95%E5%8F%A3%E8%AF%80&usm=1&ie=utf-8&rsv_cq=&rsv_dl=0_right_recommends_merge_21102&rsv_pq=ae11f7a200e7af24&oq=%E4%B8%83%E5%B7%A7%E6%9D%BF&rsv_t=72a3%2Bwg3AGstoNeO%2FowPbvi%2FoZYBuLziv7x7cdCsvITho1iV7S%2BVyHShYg%2FuaQ&euri=4a66a9f768854cf0b9c9e98d8b4da69a">
                    <span class="opr-recommends-img-border-span c-img-radius-large"></span>
                    <img 
                        class="c-img c-img2 c-img-radius-large opr-recommends-merge-img"
                                                    data-img="https://t12.baidu.com/it/u=3414765686,3016778525&fm=58"
                                            />
                </a>
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            <div class="opr-recommends-merge-img-titleline-height"><a target="_blank" class="c-font-medium inc_rs_a" title="乘法口诀" href="/s?tn=vsearch&wd=%E4%B9%98%E6%B3%95%E5%8F%A3%E8%AF%80&usm=1&ie=utf-8&rsv_cq=&rsv_dl=0_right_recommends_merge_21102&rsv_pq=ae11f7a200e7af24&oq=%E4%B8%83%E5%B7%A7%E6%9D%BF&rsv_t=add8pEuka5zR4PDcFyTHVfH6BflW4tiwpbkFGDDNGYuMTnJ7wGriXWl%2B0zQLPA&euri=4a66a9f768854cf0b9c9e98d8b4da69a">乘法口诀</a></div>
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</div>
     
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