a:
360
2 because there are 360 degrees in a quarilateral and 180 degrees in a triangle.
Yes
360 degrees
360 degrees
The four angles inside any 4-sided figure always add up to 360 degrees.
Any value in the range (90, 180) degrees.
there are 0 right angles in a trapazoid
The sum of all the interior angles is 360 degrees.
Four.
Four.
In general, none.
2