Question

10. The sides of a rhombus ABCD measure 2 cm each and the difference between two angles is 90°
then the area of the rhombus is:
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Answer 1

In ABCD rhombus all sides are measure as 2cm

Therefore, all sides are equal

Also, it two angle is 90°

Therefore all angle is 90°

so ABCD rhombus is a square because all sides are equal and all angle is 90°.