6.写出日常生活现象中的数学原理:
0 297504 297512 297518 297522 297528 297530 297534 297540 297542 297548 297554 297558 297560 297564 297570 297572 297578 297582 297584 297588 297590 297594 297596 297598 297599 297600 297602 297603 297604 297606 297608 297612 297614 297618 297620 297624 297630 297632 297638 297642 297644 297648 297654 297660 297662 297668 297672 297674 297680 297684 297690 297698 366461
| 有人和你打招呼,你笔直向他走过去 | 两点之间线段最短 |
| 要用两个钉子把毛巾架安装在墙上 | 两点确定一条直线 |
| 桥建造的方向通常是垂直于河两岸 | 夹在两平行线间的线段中,垂线段最短 |
| 人去河边打水总是垂直于河边方向走 | 直线外一点和直线上各点的连线中,垂线段最短 |