The sum of the angles in a rhombus is 360 degrees.
A rhombus is a type of quadrilateral, which means it has four sides. In any quadrilateral, the sum of all interior angles is always 360 degrees. This rule applies to all four-sided shapes, whether they are squares, rectangles, trapezoids, or rhombuses.
In the case of a rhombus, not only are opposite angles equal, but adjacent angles are supplementary. This means that they add up to 180 degrees. As a result, if you know the measures of two adjacent angles, you can easily find the other two angles. Regardless of the specific angle measures, the total will always sum to 360 degrees.