No a quadrilateral does not have any rightangles.
There is one 90 degree angle in a right angle triangle
No.
No.
Pythagoras was a famous Greek who knew all the rightangles
four
Pythagoras was a famous Greek who knew all the rightangles
It takes almost 2 earth years 2 make a single revolution your welcome ! :D
The question doesn't even make sense...
365 and 1/4 days
It depends on what it is that is revolving.
365 days