You can measure it with a ruler.
In a parallelogram adjacent angles are supplementary, so angles are 75 degrees (A & C) and 105 degrees (B & D).
120
The 4 interior angles of a parallelogram add up to 360 degrees
The 4 interior angles of a parallelogram add up to 360 degrees
You can measure it with a ruler.
It depends on what information you do have, but the simplest answer is to measure it.
Measure and add the 4 sides together.
90 degrees - the parallelogram is a rectangle (or a square) if the diagonals are equal.
You can measure it. Or you can calculate it. The details of the calculation depend on what information is given.
216 is the angel of g
120
60
The measure of D is 120.
105
The measure of A is 60.
120