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在新课标理念指导下,初中数学中出现了一类相似三角形应用题,其内容丰富、立意新颖.下面介绍这些新背景下新题型,供大家参考.一、跷跷板中的相似三角形例1如图1所示,公园内有一个长5米的跷跷板AB,当支点O在距离A端2米时,A端的人可以将B端的人跷高1.5米,那么当支点O在AB的中点时,A端的人下降同样的高度可以将B端的人跷高___米.
Under the guidance of the new curriculum standards, junior high school mathematics appeared a similar triangle application problem, its content is rich, the original intention of the novel.The following introduces the new background of the new type, for your reference.A similar triangle example in seesaw As shown in Figure 1, the park has a 5-meter-long seesaw AB. When the fulcrum O is 2 meters away from the A side, the person at the A side can lift the B-side man by 1.5 meters. When the fulcrum O is at the midpoint of AB When the people on the A side down the same height can be B side of the person who climb high ___ meters.