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] /409Disp-Num
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    [1]  2021/10/22 05:20   40 years old level / A teacher / A researcher / Very /
    Purpose of use
    For education, we are solving the area for an irregular quadrilateral ground.
    Comment/Request
    Thanks a lot! This is a great web app!
    :)
    Greetings from 8th graders at "La Apostolica" in SLP, Mexico!
    [2]  2021/10/15 05:02   20 years old level / An office worker / A public employee / Very /
    Purpose of use
    Calculate the area of a property
    [3]  2021/09/29 01:11   60 years old level or over / Self-employed people / Very /
    Purpose of use
    Determining the area of a piece of property.
    [4]  2021/09/26 01:45   20 years old level / A teacher / A researcher / Very /
    Purpose of use
    Calculate area for a building territory
    [5]  2021/08/19 23:55   50 years old level / Self-employed people / Useful /
    Purpose of use
    Determine lot area
    [6]  2021/08/06 15:05   20 years old level / An engineer / Very /
    Purpose of use
    Calculating area of removals for road construction
    [7]  2021/07/06 14:11   30 years old level / Others / Very /
    Purpose of use
    Thank you! I was considering buying a farm with some recently severed off land. Thanks to your calculator, I was able to ascertain that they had severed off the beautiful hay field that fronted on the road and that featured prominently in the listing. I would've wound up with one of those properties with very narrow frontage - having paid for one with full frontage, as reflected in the price and listing. Here's to you and to math!
    [8]  2021/07/01 23:14   30 years old level / Others / A little /
    Purpose of use
    Calculating diagonals of quadrilateral shade cloth
    [9]  2021/06/17 17:10   Under 20 years old / Elementary school/ Junior high-school student / Not at All /
    Purpose of use
    I've been trying to figure out this problem for 3 hours
    [10]  2021/05/22 06:55   30 years old level / Self-employed people / Useful /
    Purpose of use
    calculating square footage of garden bed

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