true
True
You do not need to find. If it is a parallelogram, it must be 180 degrees.
No parallelogram can have only one right angle. The consecutive angles of a parallelogram must be supplementary, meaning they must add up to 180. 180-90=90, so all the angles must be right angles.
No. In fact a parallelogram does not add up. It has a perimeter, it has an area, it has four angles and they are or can be added up. The the parallelogram itself cannot.
true
True
True
You do not need to find. If it is a parallelogram, it must be 180 degrees.
No parallelogram can have only one right angle. The consecutive angles of a parallelogram must be supplementary, meaning they must add up to 180. 180-90=90, so all the angles must be right angles.
180
180
Angle A + angle B = pi radians (180 degrees).
180
180 degrees i believe
False, the sum of the angles in a parallelogram is 360 degrees.
In a parallelogram consecutive angles are always supplementary. This means they equal 180.