`1.  The area of an isosceles trapezoid if you know sides and angle  `  -  lower base -  upper base -  equal lateral sides - angle  at the lower base

Formula for calculating Area of a trapezoid if given all sides ( A ) : Formulas for calculating Area of a trapezoid if given sides and angle ( A ) :  `2.  The area of an isosceles trapezoid in the case of a circle being inscribed in it  `  , -  bases of an isosceles trapezoid , -  angles of an isosceles trapezoid - radius  of the inscribed circle - diameter  of the inscribed circle - center  of the inscribed circle Formulas  for calculating Area of a trapezoid if given radius, diameter or bases ( A ) :        For the circle inscribed into an isosceles trapezoid, the following is TRUE: `3.  The area of an isosceles trapezoid in the case of a circle being inscribed in it and if you know middle line  `  , -  bases of an isosceles trapezoid -  equal lateral sides - radius  of the inscribed circle - center  of the inscribed circle Formulas  for calculating Area of a trapezoid if given radius, sides or middle line ( A ) :    For the circle inscribed into an isosceles trapezoid, the following is TRUE: `4.  The area of a isosceles trapezoid if you know diagonals and angle between them`  -  diagonal of a trapezoid , -  angles between the diagonals

Formula for calculating Area of a isosceles trapezoid if given diagonals and angle between them ( A ) :  `5.  The area of an isosceles trapezoid if you know lateral side, middle line and angle  `  -  equal lateral sides - middle line , - angles at the bases

Formula for calculating Area of a trapezoid if given lateral side, middle line and angle ( A ) :  `6.  The area of an isosceles trapezoid if you know bases and height  `  , -  bases of an isosceles trapezoid - height  measured at right angles to the base

Formula for calculating Area of a trapezoid if given bases and height ( A ) : 