ABCD-Rhombus Angle ABC = 150 °. Find all the corners of the rhombus.

To solve this problem, you need to use two properties:
1. The sum of the angles of the rhombus is 360 °
2. The opposite angles of the rhombus are equal
Thus, the ADC angle is also 150 °. The sum of the other two angles is 360 – 2 * 150 = 60. Since they are equal, each of them is equal to 60/2 = 30 °
It turns out the angles ADC and ABC by 150 °, and the angles BAD and BCD by 30 °