Mathematics
Senior High
Solved
2番の計算教えて欲しいです。
25
問10 4点A(-1,-1), B (5, -2), C(3,3), Dを頂点とする平行四辺形
ABCD について,次の点の座標を求めよ。
A
(1) 対角線ACの中点M
(2) 頂点D
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これらもそうですね。