Question

Question #277b6

Answer 1

`35^@`

Explanation:

A Rhombus is a flat shape with 4 equal straight sides. A rhombus looks like a diamond. . All sides have equal length. Opposite sides are parallel, and opposite angles are equal (it is a Parallelogram). Diagonals are perpendicular.

Given: angle `OAB=55^@`,
let angle `OBA=x^@`,

`=> 55+x+90=180^@`
`=> x=35^@`

`AB` and `CD` are parallel,
angle `CDO`=angle `OBA=x^@=35^@`