问题
问答题
(A) 条件(1)充分,但条件(2)不充分.
(B) 条件(2)充分,但条件(1)不充分.
(C) 条件(1)和(2)单独都不充分,但条件(1)和条件(2)联合起来充分.
(D) 条件(1)充分,条件(2)也充分.
(E) 条件(1)和条件(2)单独都不充分,条件(1)和条件(2)联合起来也不充分.
[*]
Find the area of △ABD if BC=8 inches.
(1) A line dropped perpendicular to BC from AD= 5 inches.
(2) ABCD is a parallelogram.
答案
参考答案:C