Correct Answer - Option 4 : 60°
Given:
The adjacent angles of a rhombus are in the ratio of 3 : 6.
Property:
Adjacent angles of a rhombus are supplementary.
The opposite angles of a rhombus are equal.
Calculation:
Let the adjacent angles are 3x and 6x.
3x + 6x = 180°
⇒ 9x = 180°
⇒ 3x = 60°
∴ The smallest angle of the rhombus = 60°
