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[求助] A question with Geometry + Ratio

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楼主
发表于 2006-11-26 13:44:00 | 只看该作者

[求助] A question with Geometry + Ratio

In triangle PQR, points A and B are midpoints of segments PQ and PR respectively.

What is the ratio of the area of quadrilateral ABRQ to the area of triangle PQR?

A. 1/2

B. 2/3

C. 3/4

D. 4/5

E. 5/6

 

 

 


[此贴子已经被作者于2006-11-26 13:49:13编辑过]
沙发
发表于 2006-11-26 18:23:00 | 只看该作者
i choose c. triangle PAB and triangle PQR are similar triangles. PAQ=1:2, so PABQR=1:4. draw a sketch and you will know.
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