Area of a quadrilateral Calculator

Calculates the area and perimeter of a quadrilateral given four sides and two opposite angles.

Area of a quadrilateral
side a
side b
side c
side d
sum of angles θ12

area S
    1.  
perimeter L
    1.  

    Area of a quadrilateral
    [1-10] /347Disp-Num
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    [1]  2019/04/23 03:55   Male / Under 20 years old / Elementary school/ Junior high-school student / A little /
    Purpose of use
    Trying to do schoolwork
    [2]  2019/04/03 03:50   Male / 20 years old level / An office worker / A public employee / Very /
    Purpose of use
    Lot Size Calcs
    Comment/Request
    Perfect
    [3]  2019/03/25 14:45   Male / 20 years old level / High-school/ University/ Grad student / Very /
    Purpose of use
    For calculation of area of a plot
    [4]  2019/03/08 08:02   Male / 60 years old level or over / An engineer / Useful /
    Purpose of use
    Check a surveyor's work.
    Comment/Request
    It would be great if the drawing scaled to the sides and angles being inputted.
    [5]  2019/03/04 14:16   Male / 50 years old level / A retired person / Very /
    Purpose of use
    To calculate land area
    Comment/Request
    Request: Place the data entry fields on (or along) the picture.
    [6]  2019/01/29 06:53   Male / Under 20 years old / Elementary school/ Junior high-school student / Very /
    Purpose of use
    to help me do my math and thank you for making this website
    [7]  2019/01/16 06:24   Female / Under 20 years old / High-school/ University/ Grad student / Not at All /
    Purpose of use
    Math
    Comment/Request
    this just confused me more than it helped lol
    [8]  2019/01/10 00:25   Female / 30 years old level / Self-employed people / Very /
    Purpose of use
    planning
    [9]  2019/01/06 10:11   - / 60 years old level or over / A retired person / Very /
    Purpose of use
    Personal land PLAT area calc
    [10]  2018/12/03 09:34   Male / Under 20 years old / Elementary school/ Junior high-school student / Very /
    Purpose of use
    Homework

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