Answer:
A parallelogram is a four sided shape, so this means that the total sum of interior angles is equal to 360 degrees.
It also has two sets of matching angles, therfore if it says one is 155 degrees it must have one more that is also 155 degrees.
This means 2 x 155= 310, 360 - 310 = 50 degrees remaining. This 50 degrees would be shared between the remaining two angles as they must be a matching pair also. 50 / 2=25.
This parallelogram has two angles of 155 and two of 25. Degrees.
