MN = sqrt(KN LN) = 12
KM = sqrt(MN^2 + KN^2) = 15
ML = sqrt(KL^2 - KM^2) = 20
KP = 1/3KM = 5
MR = 2/3ML = 40/3
PR = 2/3KL = 50/3
LNM相似MNK => LN/NM=NM/NK => NM^2=LN NK
相似几何数学题PR//KL,KN=9,LN=16,PM=2(KP),找出KP,KM,MR,ML,MN和PR.为什么MN
MN = sqrt(KN LN) = 12
KM = sqrt(MN^2 + KN^2) = 15
ML = sqrt(KL^2 - KM^2) = 20
KP = 1/3KM = 5
MR = 2/3ML = 40/3
PR = 2/3KL = 50/3
LNM相似MNK => LN/NM=NM/NK => NM^2=LN NK