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] /397Disp-Num
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    [1]  2021/04/16 04:23   Male / 30 years old level / An office worker / A public employee / Very /
    Purpose of use
    Verify square footage of a lot I am looking to build a house on.
    Comment/Request
    Very helpful, thank you!
    [2]  2021/03/27 05:21   Female / 50 years old level / Self-employed people / Very /
    Purpose of use
    Find the area of a wedge shaped lot for my real estate business.
    Comment/Request
    Great asset to have online. Will likely use again. Thanks for making this available.
    [3]  2021/03/23 22:10   Male / 40 years old level / An office worker / A public employee / Very /
    Purpose of use
    Measure area in yard where I want to put pavers
    [4]  2021/02/12 08:19   Male / 40 years old level / High-school/ University/ Grad student / Very /
    Purpose of use
    Finding the most all-purpose formula for use in a spreadsheet. This is a great resource!
    [5]  2021/02/06 03:03   Male / 60 years old level or over / An engineer / Very /
    Purpose of use
    Land survying.
    [6]  2021/01/27 13:25   Female / 50 years old level / Others / Useful /
    Purpose of use
    Calculate pastures of farm for Gypsum application
    [7]  2021/01/20 04:11   Female / 60 years old level or over / A retired person / Very /
    Purpose of use
    To calculate the area of an empty lot for building purposes
    [8]  2021/01/08 20:33   Female / 60 years old level or over / A retired person / Very /
    Purpose of use
    Calculation of area of proposed park for local sailing club
    [9]  2021/01/08 00:58   Male / 40 years old level / Others / Very /
    Purpose of use
    Determine total sqft of an odd shaped treehouse for structural/material weights calculation
    [10]  2020/12/19 06:05   Male / Under 20 years old / Elementary school/ Junior high-school student / Very /
    Purpose of use
    I need have some grades before christmas break or i get no presents and instead a whoopin

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