Area of a triangle with three points Calculator

Calculates the area and boundary length of a triangle with three points.

Area of a triangle with three points
point A (x1
    1. ,
    2. y1
    3. )
point B (x2
    1. ,
    2. y2
    3. )
point C (x3
    1. ,
    2. y3
    3. )

area S
    1.  
boundary length L
    1.  
    Area of a triangle with three points
    [1-6] /6Disp-Num
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    [1]  2021/05/31 14:00   Under 20 years old / High-school/ University/ Grad student / Useful /
    Purpose of use
    checking my answer when using that matrix formula thing
    [2]  2021/05/31 13:19   Under 20 years old / A teacher / A researcher / A little /
    Purpose of use
    Refresh
    Comment/Request
    Teachers do not care about the area of a triangle. Teachers do care about how to calculate the area of triangle. This formula is useful, but it is not its point to replace the basic understanding of height times base. Regarding comment from 18.05.21: Only an idiot student may think a teacher is an idiot.
    [3]  2021/05/18 18:57   Under 20 years old / High-school/ University/ Grad student / Useful /
    Purpose of use
    checking answers on homework
    Comment/Request
    teacher didn't show me this formula
    [4]  2021/05/17 22:56   Under 20 years old / High-school/ University/ Grad student / Very /
    Purpose of use
    my idiot teacher didn't show us the formula
    Comment/Request
    it works really well
    [5]  2020/12/01 16:11   20 years old level / An engineer / Useful /
    Purpose of use
    Corroborate the area of a triangle given by locations.
    [6]  2020/05/06 18:50   Under 20 years old / Elementary school/ Junior high-school student / Useful /
    Purpose of use
    help on homework demo
    Comment/Request
    no

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