## If opposite angles of a rhombus are (2x)° and (3x – 40)°, then the value of x is

If opposite angles of a rhombus are (2x)° and (3x – 40)°, then the value of x is ____. (A) 100° (B) 80° (C) 160° (D) 40° Answer: 2x = 3x – 40 … [Pythagoras theorem] ∴ opposite angles of rhombus are equal. x = 40°