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小圆点和大铅笔博士到街上散步。在巷口碰见一个平行四边形,平行四边形被什么人砍了一刀,割下了一块。“这是谁干的?真可恶!”小圆点连忙上去问道。“说不定又是橡皮大盗干的坏事!”大铅笔博士气愤地说。“哎呀呀,你们不要冤枉小橡皮了。”从身后传来小剪刀的声音。小剪刀不慌不忙地说:“这件事是我干的。”“什么?是你?小剪刀!”小圆点瞪着圆溜溜的大眼睛责问道,“你;你为什么要这样做呀?”“你慢慢听我说。刚刚我为计算平行四边形的面积发愁。你看,测量面积,要用面积单位,也就是要用小正方形块去测量,可是,这平行四边形斜头歪脑的,怎么量也不行。我灵机一动,想到了一个办法,就从平行四边形的一个顶点出发,向下做一条垂线,叫做高,对着的那条边叫做底,然后我咔嚓一剪子,就顺着高剪了下来。”
Dots and big pencil doctor walking down the street. In the alley meet a parallelogram, parallelogram by what people cut a knife, cut off a piece. “This is who did it? Really damn!” The dots quickly went up to ask. “Maybe it’s the bad thing that the robbers did!” Said the big pencil doctor angrily. “Oh, you do not wronged a little eraser.” “The voice of a little scissors came from behind. Small scissors calmly said: ”This thing is what I do. “ ”What? Are you? Small scissors!“ ”Small dots staring at the yo-yo big eyes, asked,“ you; Why do you want to do this? ”“ You slowly listen to me .I just to calculate the area of the parallelogram to worry about .You see, the measurement area, using area units, which is to use small squares to measure, but , This parallelogram oblique head crooked brain, how the amount does not work.I got a brainwave, thought of a way, starting from the apex of the parallelogram, down to make a vertical line, called high, facing the side called At the end, then I click a pair of scissors and cut it down. ”