both oxides are amphoteric
both have resistant oxide layer
both have ability to polarise water
both dfo not react with water but steam
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= 1/2 diagonal 1 * diagonal 2 * sin of angle between them = 1/2* diagonal * sum of perpendicular to digonal from opp vertices
It is neither. A diagonal line occupies the range of everything in between those two absolutes.
A diagonal is a line so the area of any diagonal must be zero.
A line which intersects another line at an angle between 0 and 180 degrees.
A diagonal cannot be a side of a rectangle, and a side cannot be a diagonal.