是在三角形ABC的边AB和BC上分别取点D和F ,E 为线段DF的中点.求证 AD+FC小于或等于AE+EC谁告诉你F、D为中点了?

来源:学生作业帮助网 编辑:作业帮 时间:2024/08/25 04:13:57
x[ORmD={Z94=ASTkߠJw܍ə?RNr2?=Y);wvvꯓyS&5aTaRD!gI#bD2 Ϻ,bY޲L*4V>cgI\[D,/\ֶ(i0Ž- Ed%"tA[H[-i W4 6nR/ ;zaǪaF!x .3 e 8Nr!ԏ`LDW·G%"enCayKvg=a?cKQ+9Z䷞sU<})aX Up Rs+%ʨCm[m 0+L@NEK?ո9rwlNKc?C:EOzׯ+ܻfs6ض LF24fI#>gAV:\s|$f\1@--Qp4Җ/܁?s$筌q=iK*A2z/C!5VUD3rs4].G1hۓ5($𤾥]q11A@ =%@ºq;oF~Y4\qmτGOLM6uRRfg >&k'W(1s7'fYf'&L:2|N|5D1,6aA CzBo.gw<GB"8eLނaBg1ApHlZJ#6x^ rq4+!Q%DzCH+m" o['(IHbBj<$pBڹ-'&&'PtD_ᐬ$f'7"5to-PmS[ UP5]f(Vr1SEl&\Y!s$d KFuN4IjT"3K&c, 85UGLfAWP*!z?~~i{GHsۄY؂JѣbסeIn8:ǿԾk 7l_ 6k{<Hkk,`nqЕe F$v?Gh_<߬EtW=U*HN ƛ;bJ- ҂ QI!yWwNv_>Q(rF]`zc&Hێ;T>_ė"m*iߑ]1a0/咱'6w