A.△AED∽△BED | B.△AED∽△CBD |
C.△AED∽△ABD | D.△BAD∽△BCD |
A.∠APB=∠EPC | B.∠APE=90° |
C.P是BC的中点 | D.BP︰BC=2︰3 |
A.3个 | B.2个 | C.1个 | D.0个 |
A.AE⊥AF | B.EF︰AF=︰1 |
C.AF2=FH·FE | D.FB︰FC=HB︰EC |
A.5︰12 | B.9︰5 | C.12︰5 | D.3︰2 |
A.4 cm、cm | B.5 cm、cm |
C.4 cm、2cm | D.5 cm、2cm |
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