Answer: In a parallelogram, opposite angles are equal, so we can set up the following equation:
3x + 10 = 180 - (4x + 10)
Simplifying and solving for x, we get:
3x + 10 = 170 - 4x
7x = 160
x = 20
Now we can substitute x = 20 into the expressions for the angles to find their values:
3x + 10 = 70 degrees
4x + 10 = 90 degrees
Since opposite angles in a parallelogram are equal, the other two angles must also be equal to these values. Therefore, the internal angles of the parallelogram are:
70 degrees, 70 degrees, 110 degrees, 110 degrees
Explanation: