Answer:
D. 28
Step-by-step explanation:
The total of angles in a triangle is 180°. Since this is a rhombus, the four triangles that make up the rhombus are all right triangles. Therefore, you already know one of the angles in the triangle.
90 + (x + 6) + 2x = 180
90 + x + 6 + 2x = 180
Then, combine all like terms and solve.
3x + 96 = 180
3x = 84
x = 28
