Mathematics
Senior High
解説ねがいます🙇♀️
例題 14 右の図の△ABCにおいて, AD: DB =D 2:3,
BE:EC = 3:4 である。このとき, 次の面積比を求めよ。
D
(1) AOAB :△OAC
3)
B
3E
C
(2) △OBC: △OAC
(3) △OAC :△ABC
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