360 degrees, as for any quadrilateral.
The sum of the four interior angles of a trapezoid is 360 degrees.
The sum of the 4 interior angles of a trapezoid add up to 360 degrees.
The 4 interior angles of a trapezoid add up to 360 degrees
The 4 interior angles of a trapezoid add up to 360 degrees
360 degrees
360 degrees
360 degrees
The 4 interior angles add up to 360 degrees
The 4 interior angles add up to 360 degrees
The 4 interior angles add up to 360 degrees.
The sum of the interior angles is 360 degrees.
The four interior angles of a trapezoid add up to 360 degrees