配套习题- 利用相似三角形的性质解题（一） -【青果学院】

1/5单选题

难度：

1.

小明在测量楼高时，先测出楼房落在地面上的影长BA为15米（如图），然后在A处树立一根高2米的标杆，测得标杆的影长AC为3米，则楼高为（　　）

青果学院

A	10米
B	12米
C	15米
D	22.5米

正确答案：QQ==

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

2/5单选题

难度：

2.

如图，为估算某河的宽度，在河对岸选定一个目标点A，在近岸取点B，C，D，使得AB⊥BC，CD⊥BC，点E在BC上，并且点A，E，D在同一条直线上. 若测得BE=20m，CE=10m，CD=20m，则河的宽度AB等于（　　）

青果学院

A	60m
B	40m
C	30m
D	20m

正确答案：Qg==

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

3/5单选题

难度：

3.

如图，夏季的一天，身高为1.6m的小玲想测量一下屋前大树的高度，她沿着树影BA由B到A走去，当走到C点时，她的影子顶端正好与树的影子顶端重合，测得BC=3.2m，CA=0.8m，于是得出树的高度为（　　）

青果学院

A	8m
B	6.4m
C	4.8m
D	10m

正确答案：QQ==

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

4/5单选题

难度：

4.

如图，小李打网球时，球恰好打过网，且落在离网4m的位置上，则球拍击球的高度h为（　　）

青果学院

A	0.6m
B	1.2m
C	1.3m
D	1.4m

正确答案：RA==

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

5/5单选题

难度：

5.

某校数学兴趣小组为测量学校旗杆AC的高度，在点F处竖立一根长为1.5米的标杆DF，如图所示，量出DF的影子EF的长度为1米，再量出旗杆AC的影子BC的长度为6米，那么旗杆AC的高度为（　　）

青果学院

A	6米
B	7米
C	8.5米
D	9米

正确答案：RA==

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