In the parallelogram ABCD, the value of ﹥ A: ﹥ B: ﹥ C: ﹥ D may be () A. 1:2:3:4B. 1:2:2:1C. 2:2:1:1D. 2:1:2:1

In the parallelogram ABCD, the value of ﹥ A: ﹥ B: ﹥ C: ﹥ D may be () A. 1:2:3:4B. 1:2:2:1C. 2:2:1:1D. 2:1:2:1


∵ quadrilateral ABCD is a parallelogram, ∵ a = ∵ C, ∵ B = ∵ D, ∵ a + ∵ B = ∵ C + ∵ D, only D meets the above two conditions, 2 = 2, 1 = 1, 2 + 1 = 2 + 1, so select D



In the parallelogram ABCD, the value of ﹥ A: ﹥ B: ﹥ C: ﹥ D can be ()
A. 1:2:3:4B. 3:4:4:3C. 3:3:4:4D. 3:4:3:4


According to the fact that the two groups of diagonals of the parallelogram are equal, we can choose D



Given that a, B, C and D are four different integers, and ABCD = 6, find the value of a + B + C + D


For different integers, there are (- 1, - 2,1,3) (- 3, - 1,1,2)
So a + B + C + D = 1 or - 1