A quadralateral is a polygon with four angles. I think what you mean is "Do all quadralaterals have an angle sum of 360 degrees?". Yes they do, you can determine the angle sum of a polygon with this formula:
s=(n-2)180
s is the angle sum while n is the number of sides, I hope this helps.
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No, it is the EXTERNAL angles that add to 360 degrees.
360, since all quadrilaterals' interior angles add up to 360.
360
Exterior angles of all polygons total 360 degrees.
All the interior angles add up to 360 degrees.