1.  The area of a trapezoid if you know bases, heigh and middle line of a trapezoid  

area arbitrary trapezoid m

 

a , b     -  bases

h  - height

m red - middle line

 

Calculate the Area of a trapezoid if given bases, heigh and middle line of a trapezoid ( A ) :

area arbitrary trapezoid m F1

area arbitrary trapezoid m F2

 

 

2.  The area of a trapezoid if you know diagonals and angle between them

area arbitrary trapezoid d

 

d1 blue , d2 blue -  diagonals

alpha red , beta green -  angles between the diagonals

 

 

Calculate the Area of a trapezoid if given diagonals and angle between them ( A ) :

area arbitrary trapezoid d F1  area arbitrary trapezoid d F2

 

 

3.  The area of a trapezoid if you know all sides  

area arbitrary trapezoid side

 

 

a , b , c , d black   -  sides

 

 

Calculate the Area of a trapezoid if given all four sides ( A ) :

area arbitrary trapezoid side F