菱形ABCD的周长为28cm,∠BAD:∠ABC=1:2,则BD=______AC=___
菱形ABCD的周长为28cm,∠BAD:∠ABC=1:2,则BD=______AC=___
菱形ABCD的周长为28cm,角BAD=1/2∠ABC,则BD= AC=
菱形ABCD的周长为48cm,∠BAD:∠ABC=1:2,则BD=12cm,菱形的面积是?
菱形ABCD的周长为48cm,∠BAD:∠ABC=1:2,求BD的长
如图,已知菱形ABCD的周长为16cm,∠ABC比∠BAD=1比2,对角线AC,BD交于点O,求BC的长及菱形的面积
已知:如图,菱形ABCD的周长为8cm,∠ABC:∠BAD=2:1,对角线AC、BD相交于点O,求AC的长及菱形的面积.
菱形周长为48cm,∠BAD:∠ABC=1:2,则BD=______,菱形面积是______.
若菱形ABCD周长为40cm,AC=10cm,则∠BAD=(),∠ABC=().
已知菱形ABCD的周长是16cm,∠BAD:∠ABC=2:1,求对角线AC的长
已知菱形ABCD的周长为20cm,∠A:∠ABC=1:2,则对角线BD的长为______cm.
如图,已知菱形ABCD的周长为20cm,∠A:∠ABC=2:1,则对角线BD=______cm.
菱形abcd的周长为40cm,对角线ac的长为10cm,则∠abc=多少 ,∠bad=多少