`1.  Diagonals of a trapezoid if you know sides and angles at the base  `  , -  bases , -  legs , -  angles  at the base , -  diagonals

Find the diagonal of a trapezoid using the law of cosines  (  ) :  Find the diagonal of a trapezoid if given all four sides  (  ) :  `2.  Diagonals of a trapezoid using height  `  , -  bases , -  legs , -  angles  at the base , -  diagonals - height

Find the diagonal of a trapezoid using height, angles at the base and sides  (  ) :      `3.  Diagonals of a trapezoid if you know other diagonal, angle between the diagonals and height or area or midsegment  `  , -  bases , -  diagonals , -  angles between the diagonals - height - midsegment - areaof a trapezoid

Find the diagonal of a trapezoid if given other diagonal, angle between the diagonals and height or area or midsegment  (  ) :      * It is true in this case: `4.  Diagonals of a trapezoid using formula for the sum of the squared diagonals   `  - lower base - upper base , -  legs , -  diagonals

Formula for the sum of the squared diagonals   : Find the diagonal of a trapezoid using formula for the sum of the squared diagonals  (  ) :  