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Author:
Journal / Book Title:
Year:
Volume:
Issue:
ti xing wen ti de chang yong jie ti ce lue
Author(s):
LI Shi
Pages:
37
-
40
Year:
2006
Issue:
Z1
Journal:
School Journal of Mathematics
Keyword:
梯形
;
全等三角形
;
解题策略
;
平行四边形
;
平行线
;
相似三角形
;
延长线
;
点拨
;
证明
;
对角线
;
Abstract:
<正>一、延长两腰延长梯形的两腰,使它们交于一点,可得到两个相似三角形.例1 如图1,在梯形ABCD中,AD∥BC,EF∥BC,梯形AEFD的面积与梯形EBCF的面积相等.
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