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三平方の定理を利用して
(1) ＡＢ＝√[{(4)－(2)}²＋{(8)－(1)}²]
＝√[{2}²＋{7}²]
＝√53
(2) ＣＤ＝√[{(3)－(－2)}²＋{(9)－(4)}²]
＝√[{5}²＋{5}²]
＝√50＝5√2
(3) ＥＦ＝√[{(－3)－(－9)}²＋{(5)－(－3)}²]
＝√[{6}²＋{8}²]
＝√100
＝10
Mathematics
Junior High
Solved
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次の座標をもつ2点間の
TA
問8:
25
距離を求めなさい。
15
(2) C(-2, 4), D(3, 9)
5
0.
5
>p.225 6
25
15
194
8
Answers
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