ABCD is a parallelogram in which ∠BAD = 60° and ∠BAC = 30°, then ∠CBD =
45°
60°
70°
80°
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The lengths of diagonals of a rhombus are 24 cm and 18 cm respectively, length of each side of the rhombus is :
25 cm
15 cm
35 cm
45 cm
The diagonals of the rectangle ABCD intersect at O. If ∠OBC = 64°, then ∠OAB =
64°
32°
26°
36°
If ∠ADB of the rhombus ABCD is 30°, then ∠ACB =
30°
90°