<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（ ）就是（ ）。</span><br><br><strong><span>2、</span></strong><span>过一点可以画（ ）条直线，过两点只能画（ ）条直线。</span><br><br><strong><span>3、</span></strong><span>平行线之间的距离处处（ ）。</span><br><br><strong><span>4、</span></strong><span>长方形和正方形的两组对边互相（ ），两组邻边互相（ ）。</span><br><br><strong><span>5、</span></strong><span>平行四边形有（ ）条高，梯形有（ ）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。（ ）</span><br><br><strong><span>2、</span></strong><span>有一组对边平行的四边形叫做梯形。（ ）</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。（ ）</span><br><br><strong><span>4、</span></strong><span>一条直线的垂线有无数条。（ ）</span><br><br><strong><span>5、</span></strong><span>正方形是特殊的平行四边形。（ ）</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（ ）。</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（ ）。</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（ ）。</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（ ）。</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（ ）。</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/2018/1229/2018122910408.png?m=0.4019418014321188"><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/2018/1229/20181229104046.png?m=0.5033875351001906"><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/2018/1229/20181229104122.png?m=0.017868570385515703"><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/2018/1229/2018122910421.png?m=0.5852436868662847"><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/2018/1229/20181229104234.png?m=0.6089103533504239"><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><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/2018/1229/20181229104313.png?m=0.35266343607216144"><br><br><br><div style="text-align: center;"><strong>思维拓展题</strong></div><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/2018/1229/20181229104411.png?m=0.9879378857451011"><br><br><span>有（ ）个平行四边形</span><br><br><span>有（ ）个梯形</span><br><br><br><div style="text-align: center;"><strong><font color="#38761d">2018-2019学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><div><span><br></span></div><div><span>1、平行 相交</span></div><div><span><br></span></div><div><span>2、无数 1</span><br><br><span>3、相等</span><div><span><br></span></div><div><span>4、平行 垂直</span><br><br><span>5、无数 无数</span><br><br><strong><span>二、</span></strong><span>1、× 2、× 3、× 4、√ 5、√</span><br><br><strong><span>三、</span></strong><span>1、A 2、B 3、B 4、A 5、A</span><br><br><strong><span>四、</span></strong><span>1、②√ ④√ ⑥√</span><br><br><span> 2、③√ ④√ ⑥√</span><br><br><strong><span>五、</span></strong><span>略</span><br><br><strong><span>六、</span></strong><span>图略 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><span> 9 6</span><br></div></div><div><span><br></span></div>
四年级上