Mathematics
Senior High
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10
2
ABCD IT, AD // BC,
AB=2, BC= 4, CD=√7, DA=1
のとき、この台形の面積Sを求めよ。
2
B
A 1 D
√7
C
-
8185√3
2
[点Aを通り辺 CD に平行な直
2 LOGE CS
線を引いて考える ]
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