Flip 90 or 180 degrees should be understood as "flip 90 or 180 degrees", use the mirror flip filter fliph, flipv.
A table stays put
The table is mirrored horizontally along the X-axis (90 degrees)
The table is mirrored vertically along the Y axis Flip (180 degrees)
table{FILTER: progid:DXImageTransform.Microsoft.BasicImage(Rotation=1);}
Rotation angle filter
A table stays put
The table is rotated 90 degrees clockwise
The table rotates 180 degrees clockwise
Table rotated 270 degrees clockwise