2
Triangle diamonds and parallelogram
100
None normally
no it does not
By definition, a parallelogram two separate pairs has parallel sides. The only type of parallelogram that has perpendicular sides is a rectangle. All others have non-perpendicular sides.
Not normally unless it's in the shape of a rectangle
Triangle diamonds and parallelogram
100
The single altitude of a parallelogram is its perpendicular height
None normally
A parallelogram with perpendicular sides is called a rectangle.
No
no it does not
Yes, if the parallelogram is a rhombus or a square.
By definition, a parallelogram two separate pairs has parallel sides. The only type of parallelogram that has perpendicular sides is a rectangle. All others have non-perpendicular sides.
A parallelogram is a rhombus if and only if the diagonals are perpendicular
No. A parallelogram has two parallel sides.