问题描述:
如图:在△ABC中,BC=1,(1)若AD1=1/3AB,AE1=1/3AC,则D1E1= (2)若D1D2=1/3D1B,E1E2=1/3E1C,则D2E2
如图:在△ABC中,BC=1,(1)若AD1=1/3AB,AE1=1/3AC,则D1E1=
(2)若D1D2=1/3D1B,E1E2=1/3E1C,则D2E2=
(3)若D2D3=1/3D2B,E2E3=1/3E2C,则D3E3=
(4)若Dn-1Dn=1/3Dn-1B,En-1En=1/3En-1C,则DnEn=
如图:在△ABC中,BC=1,(1)若AD1=1/3AB,AE1=1/3AC,则D1E1=
(2)若D1D2=1/3D1B,E1E2=1/3E1C,则D2E2=
(3)若D2D3=1/3D2B,E2E3=1/3E2C,则D3E3=
(4)若Dn-1Dn=1/3Dn-1B,En-1En=1/3En-1C,则DnEn=
问题解答:
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