__The Density Triangle__

__The Density Triangle__

###### (Also known as the "DMV Triangle."

## And How To Use This Nifty Little Gadget!!!

__What do you want to know?__

### What is the "Density Triangle?"

Why would we want to use this?

# What is the "Density Triangle?"

### The density triangle is a trick that will tell which formula to use in order to find the density, mass, or volume when you have the other two.

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# What does it look like?

### The density triangle is a triangle that is split into three sections. __Density__, which is symbolized by the letter "**D**," is in the left bottom section, the __Mass__, which is symbolized by the letter "**M**," is on the top, and the __volume__,which is symbolized by the letter "**V**, is on the bottom right.
Write the letters D, M, and V in the triangle in the order that you reach each section as you go from left to right. The diagram below will show you how this is done.

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# How do we use it?

### To use the DMV Triangle, after you have set it up, simply cover the item that you want to find and you have to formula!!! Below are a few demonstrations.

##### (To see how to set it up click here!)

### Start with the DMV Triangle:

To find the formula for "** Density**," cover up the "

**D**" (as shown below).

This leaves the the "**M**" over the "**V**," giving you the formula "**M/V**." Therefore, the fomula is D=M/V

To find the formula for "** Volume**," cover up the "

**V**" (as shown below).

This leaves the the "**M**" over the "**D**," giving you the formula "**M/D**." Therefore, the formula is V=M/D.

To find the formula for "** Mass**," cover up the "

**M**" (as shown below).

This leaves the the "**D**" over the "**V**," giving you the formula "**D x V**." Therefore, the formula is M=D x V.

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# Why would we want to use this?

### By using this trick, you never have to remember any of the actual formulas. All you have to do is remember "**DMV**." Since the **D**epartment of **M**otor **V**ehicles. The trick is knowing where each letter goes, but, once you have that down, each of the formulas can be seen easily, without a chance of error.

**D**

**M**

**V**

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# What else can it tell us?

### The density triangle can be used for other things as well. Any formula that has: "x=y/z" can be set up as a triangle. For example, to find the "**gradient****" of an isoline, you need to find "****the **__change in field__ over the __change in distance__."
To simplify this, I would change the type of isoline to a specific one that makes it easier to remember. My suggestion is to change the isolines to contour lines, because in the case of contour lines, the field is elevation, which provides an easier trick for remembering the formula.

The formula now goes from "**G=F/D**," where **G=Gradient**, **F=Field**, and **D=Distance** to "**The **__GED__ Triangle. The field in contour lines is __E__levation. So, now it is change in elevation over change in distance, which gives us the easy **GED** to remember.

**" of an isoline, you need to find "**

**the**."__change in field__over the__change in distance__**G=F/D**," where

**G=Gradient**,

**F=Field**, and

**D=Distance**to "

**The**. The field in contour lines is

__GED__Triangle**levation. So, now it is change in elevation over change in distance, which gives us the easy**

__E__**GED**to remember.