Geometry

http://prntscr.com/1xt0ri

I don't understand the language they're using. Not that I'm not getting it - I literally do not understand the underscores, or why d is is off and over to the left.

Question

Geometry 

>> http://prntscr.com/1xt0ri

I don't understand the language they're using. Not that I'm not getting it - I literally do not understand the underscores, or why d is is off and over to the left.

compassionate · Answer

@wio , @Luigi0210 , @ganeshie8

anonymous · Answer

$$
d_\overline{JO}=\frac 12 x_2;\;d_\overline{RN}=x_2\
d_\overline{JO}=\frac 12 \left(d_\overline{RN}\right)
$$

anonymous · Answer

Is this it?

anonymous · Answer

I'm guessing they're referring to the distance between points J and O

compassionate · Answer

Correct. They're reffering to that. But I'm confused with what the symbols mean. It's foreign to me.

anonymous · Answer

They are variables, that is all.

anonymous · Answer

The $x_2$ is just when they run out of good letters.

compassionate · Answer

I'm talking about the "d" 

Why is it so oddly placed.

anonymous · Answer

They want to make their d look bigger
So they make JO smaller.

compassionate · Answer

U-so what does D mean..

anonymous · Answer

Distance

anonymous · Answer

You say I lied?

compassionate · Answer

attachment