# Mathematical Functions

plus
Seem to work. Although could just state the elementary formulae used. Having said that, it depends upon the audience.

PrudensOptimus
most people wouldn't know how to use the formula if i state it...

i tried the first method

the area for triangle 3,1,2 is 0 square units

PrudensOptimus
because the semiperimeter is 3, thus when you apply it to Heron's Formula it has a 0 term in the squareroot, since it's all multiplication, any term multiply by 0 would produce 0. Thus my functions works fine.

Staff Emeritus
Gold Member
Or for a more "obvious" reason, if you try to draw a 3-1-2 triangle, you'll find its height is 0.

plus
Originally posted by Hurkyl
Or for a more "obvious" reason, if you try to draw a 3-1-2 triangle, you'll find its height is 0.

As it has to be as 2+1 = 3.