Area of a triangle

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Luffy
Luffy 2012-6-14
移动：DGM 2023-2-21
Is there a function to find area of triangle,not by using Heron's algorithm.

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Dr. Seis
Dr. Seis 2012-6-14
How about polyarea?
>> x = [0, 0, 4];
>> y = [0, 3, 0];
>> area1 = polyarea(x,y)
area1 =
6
>> area2 = 0.5*3*4
area2 =
6
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Dr. Seis
Dr. Seis 2012-6-22
I think you would have to do some sort of coordinate transform (to still use the "polyarea" function above), such that all the coordinate values for one of the dimensions (e.g., the z-coordinate) are 0. But it seems using Heron's algorithm would be much easier.
SaN AruL
SaN AruL 2016-11-25
移动：DGM 2023-2-21
thank you Dr. Seis..........

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更多回答（1 个）

AYUSH MISHRA
AYUSH MISHRA 2020-5-26
function area=tri_area(b,h,n)
area=0.5*b*h*n;
end
%Here b=base of triangle , h=height of triangle , n=number of triangle
Example
area= tri_area(2,3,5)
area =
15

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