I'm in 8th grade and my geo teacher gave this as a assigment what I'm doing is making it out of 2 by 6 pieces of paper if any one can help me please do this is so *censored* evil :confused::confused::confused::confused: ty if you can

<><don't fear the reaper we all die eventually><>

*takes out a chewy bar and eats it while waiting*
<><don't fear the reaper we all die eventually><>

Well, the surface area of a tetrahedron is 4*(area of each side).

Since a tetrahedron is made of 4 triangles, 4*(1/2*base*height)

The volume is simply (1/3)*(area of base)*(height)

As far as making a tetrahedron

http://www.mathsisfun.com/geometry/i...dron-model.gif

Not sure what you mean about "5 tetrahedron"

*takes out anthor chewy bar and eats that one*
<><don't fear the reaper we all die eventually><>

What I mean bye 5 tetrahedron is show as my image 5 interlocking triangles

*picks up trash from chewy bars and takes out anthor one*
<><don't fear the reaper we all die eventually><>

*eats last of chewy bars then goes and orders a cheese pizza*

*take out mp3 and starts listening waiting for help*
<><don't fear the reaper we all die eventually><>

Quote:

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Originally Posted by klaus13239

what i mean bye 5 tetrahedron is show as my image 5 interlocking triangles

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Are you sure? There are no 5 sided isohedra. (tetra means 4, it's from greek)

Really? Well try explaing that to my teacher let me give you a link I found for it

Here one url I found let me find the other
Origami Geometric Constructions

Here the other url
Instructions for making the compound of 5 tetrahedrons

That's a "compound of 5 tetrahedrons" not a "5 tetrahedron"! Anyway now we are on the same page!

Okay so can u help meh?

And I'm sorry about confusing both of us
<><don't fear the reaper we all will die eventually><>

*sees pizza guy coming and goes to get cash for pizza*
<><don't fear the reaper we all will die eventually><>

*leaves to go to Google to find it*
<><don't fear the reaper we all will die eventually><>

Ronly I am so ronly