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8OoF

“Your password must be 8-16 characters, and include at least one lowercase lett”的意思...

解答:解:过点O作OM⊥AB于点M,作ON⊥BC于点N,∵∠ABC=90゜,∴四边形OMBN是矩形,∴OM∥BC,ON∥AB,∴△AOM∽△ACB,△CON∽△CAB,∴OM:BC=OA:AC,ON:AB=OC:AC,∵O为AC的中点,∴OM=12BC=12×8=4,ON=12AB=12×6=3,∴MN=OM2+ON2=5,由垂线段最短,可得当OE...

I have a classmate,his name is Jeni.Although Jeni was only 14 years old,but is very high,is a healthy wheat color skin.Jeni personality humor,make things often laugh,but his grades are very good,is count as one of the very best...

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