M и N - точки на катетах AC и BC
По теореме Пифагора
AC^2 + BC^2 = AB^2
MC^2 + NC^2 = MN^2
MC≤AC, NC≤BC =>
MC^2≤AC^2, NC^2≤BC^2 =>
MN^2≤AB^2 =>
MN≤AB
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Answers & Comments
M и N - точки на катетах AC и BC
По теореме Пифагора
AC^2 + BC^2 = AB^2
MC^2 + NC^2 = MN^2
MC≤AC, NC≤BC =>
MC^2≤AC^2, NC^2≤BC^2 =>
MN^2≤AB^2 =>
MN≤AB