2018年小学四年级数学上册《第四单元》测试题及答案

<strong><span>一、填空</span></strong><br><br><strong><span>1、</span></strong><span>在同一平面内的两条直线,不是( &nbsp;&nbsp;&nbsp;&nbsp;)就是( &nbsp;&nbsp;&nbsp;&nbsp;)。</span><br><br><strong><span>2、</span></strong><span>过一点可以画( &nbsp;&nbsp;&nbsp;&nbsp;)条直线,过两点只能画( &nbsp;&nbsp;&nbsp;&nbsp;)条直线。</span><br><br><strong><span>3、</span></strong><span>平行线之间的距离处处( &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)。</span><br><br><strong><span>4、</span></strong><span>长方形和正方形的两组对边互相( &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;),两组邻边互相( &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)。</span><br><br><strong><span>5、</span></strong><span>平行四边形有( &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)条高,梯形有( &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;)条高。</span><br><br><strong><span>二、判断。(对的画“√”错的画“×”)</span></strong><br><br><strong><span>1、</span></strong><span>不相交的两条直线叫平行线。( &nbsp;&nbsp;&nbsp;)</span><br><br><strong><span>2、</span></strong><span>有一组对边平行的四边形叫做梯形。( &nbsp;&nbsp;&nbsp;)</span><br><br><strong><span>3、</span></strong><span>同一平面内两条直线不是平行就是垂直。( &nbsp;&nbsp;&nbsp;)</span><br><br><strong><span>4、</span></strong><span>一条直线的垂线有无数条。( &nbsp;&nbsp;&nbsp;)</span><br><br><strong><span>5、</span></strong><span>正方形是特殊的平行四边形。( &nbsp;&nbsp;&nbsp;)</span><br><br><strong><span>三、选择。(将正确的序号填入括号里)</span></strong><br><br><strong><span>1、</span></strong><span>把一个长方形框架拉成一个平行四边形后,周长( &nbsp;&nbsp;&nbsp;)。</span><br><br><strong><span>A、</span></strong><span>不变    </span><strong><span>B、</span></strong><span>变大</span>    <strong><span>C、</span></strong><span>变小</span><br><br><strong><span>2、</span></strong><span>两个完全一样的梯形一定能拼成一个( &nbsp;&nbsp;&nbsp;)。</span><br><br><strong><span>A、</span></strong><span>长方形</span>    <strong><span>B、</span></strong><span>平行四边形</span>    <strong><span>C、</span></strong><span>梯形</span><br><br><strong><span>3、</span></strong><span>如果在同一平面内画两条直线,它们都和第三条直线相交成直角,那么这两条直线( &nbsp;&nbsp;&nbsp;)。</span><br><br><strong><span>A、</span></strong><span>互相垂直</span>    <strong><span>B、</span></strong><span>互相平行</span>    <strong><span>C、</span></strong><span>不垂直也不平行</span><br><br><strong><span>4、</span></strong><span>平行四边形的两组对角( &nbsp;&nbsp;&nbsp;)。</span><br><br><strong><span>A、</span></strong><span>一定相等</span>    <strong><span>B、</span></strong><span>不一定相等</span>    <strong><span>C、</span></strong><span>不能确定</span><br><br><strong><span>5、</span></strong><span>线段AB向下平移后得到线段CD,那么AB和CD( &nbsp;&nbsp;&nbsp;)。</span><br><br><strong><span>A、</span></strong><span>互相平行</span>    <strong><span>B、</span></strong><span>相交</span>    <strong><span>C、</span></strong><span>互相垂直</span><br><br><strong><span>四、我能找。(在正确答案下面画“√”)</span></strong><br><br><span>1、下面的各组直线中,哪组互相平行?</span><br><br><img src="https://www.szxuexiao.com/uploadimages/2018/1101/20181111479.png?m=0.914182377358369"><br><br><span>2、下面的各组直线中,哪组互相垂直?</span><br><br><img src="https://www.szxuexiao.com/uploadimages/2018/1101/201811114740.png?m=0.5164819013283002"><br><br><strong><span>五、我能画。</span></strong><br><br><span>1、过直线上或直线外一点,画已知直线的垂线。</span><br><br><img src="https://www.szxuexiao.com/uploadimages/2018/1101/201811114812.png?m=0.7774643408882262"><br><br><span>2、过直线外一点画已知直线的平行线。</span><br><br><img src="https://www.szxuexiao.com/uploadimages/2018/1101/201811114842.png?m=0.4370534457420081"><br><br><span>3、过A点分别作两条直线的平行线和垂线。</span><br><br><img src="https://www.szxuexiao.com/uploadimages/2018/1101/20181111499.png?m=0.6859999644570194"><br><br><span>4、利用直尺和三角尺画一个长5厘米、宽2厘米的长方形。</span><br><br><span>5、画出下面图形地边上的高。</span><br><br><img src="https://www.szxuexiao.com/uploadimages/2018/1101/201811114955.png?m=0.7437839343894783"><br><br><strong><span>六、一头牛去河边喝水,它怎么走才能尽快喝到水呢?在图中标出路线,并说明理由。</span></strong><br><br><strong></strong><img src="https://www.szxuexiao.com/uploadimages/2018/1101/2018111141027.png?m=0.44257855638329135"><br><br><br><strong><span>思维拓展题</span></strong><br><br><span>下面的图形中,有几个平行四边形,几个梯形?</span><br><br><img src="https://www.szxuexiao.com/uploadimages/2018/1101/201811114116.png?m=0.40574780325346316"><br><br><span>有( &nbsp;&nbsp;&nbsp;)个平行四边形</span><br><br><span>有( &nbsp;&nbsp;&nbsp;)个梯形</span><br><br><br><div style="text-align: center;"><strong><font color="#38761d">2018年小学四年级数学上册《第四单元》测试题参考答案</font></strong></div><br><strong><span>一、</span></strong><span>1、平行 &nbsp;&nbsp;相交 &nbsp;&nbsp;2、无数 &nbsp;&nbsp;1</span><br><br><span>3、相等&nbsp; &nbsp;4、平行 &nbsp;&nbsp;&nbsp;垂直</span><br><br><span>5、无数 &nbsp;&nbsp;无数</span><br><br><strong><span>二、</span></strong><span>1、× &nbsp;&nbsp;&nbsp;2、× &nbsp;&nbsp;3、× &nbsp;&nbsp;4、√ &nbsp;&nbsp;&nbsp;5、√</span><br><br><strong><span>三、</span></strong><span>1、A &nbsp;&nbsp;&nbsp;&nbsp;2、B &nbsp;&nbsp;&nbsp;3、B &nbsp;&nbsp;&nbsp;4、A &nbsp;&nbsp;&nbsp;&nbsp;5、A</span><br><br><strong><span>四、</span></strong><span>1、②√ &nbsp;&nbsp;④√ &nbsp;&nbsp;⑥√</span><br><br><span>&nbsp; 2、③√ &nbsp;&nbsp;④√ &nbsp;&nbsp;⑥√</span><br><br><strong><span>五、</span></strong><span>略</span><br><br><strong><span>六、</span></strong><span>图略 &nbsp;因为直线外一点到直线的垂直线段最短。</span><br><br><strong><span>思维拓展</span></strong><div><span><br></span></div><div><span>9 &nbsp;&nbsp;6</span><br><div><span><br></span></div></div>