八年级下册数学题(共6页)
26.如图:△ABC中,AD⊥BC于D,DE⊥AB于E,DF⊥AC于F。易证:AE·AB = AC·AF,当点D在△ABC外或内时,图 = 2 \* GB3 ② = 3 \* GB3 ③ = 4 \*
八年级下册数学题(共6页)