Question

observe rhombus AB find the value of

Answer 1

opposite angles of a rhombus are equal
x+30=2x-5
x=35

Answer 2

In a rhombus all the angles are equal.
angleA=angleC
or,(x+30)°=(2x-5)°
or,x+30=2x-5
or,x-2x=-5-30
or,-x=-35
or,x=35
angleA=(x+30)°=(35+30)°=65°
Hence,the value of x is 35 and measure of angleA is 65°.