Mo2men wrote:
Bunuel wrote:
Official Solution:
If points A, B, C, and D form a quadrilateral, is AC longer than BD?
Statement (1) by itself is insufficient. Imagine a kite-shaped figure with an obtuse angle on top.
Statement (2) by itself is insufficient. S2 means that the quadrilateral is a rhombus.
Statements (1) and (2) combined are sufficient. S2 means that the quadrilateral is a rhombus, while S1 tells us which diagonal of the rhombus is longer.
Answer: C
BunuelA rhombus with equal sides means that the diagonals are equal. Choice B should be sufficient alone.
Why do you consider it wrong?
Hi
A Rhombus is a quadrilateral that has all 4 sides equal, but that does NOT necessarily mean that its diagonals will also be equal.
Bunuel has already explained it in this thread by the means of a diagram before, please check.
A Rhombus whose diagonals are made equal, then becomes a Square.