How to illustrate that the medians of a triangle concur at a point called the centroid which always lies inside the triangle by paper folding ? Plz help show figures

Answer : 

we know :  Median of a triangle is a line that join a vertex to mid point of opposite side . 

And
Where all three median meet that point is  called cetroid  . 

Now to illustrate the centroid always lies inside the triangle by paper folding , we use these steps  ,

Step 1 -  Cut any shape triangle  . 

Step 2 - Now fold that triangle as we get a line between a vertex and mid point of opposite side  .

Step 3 -  follow step 2 to get three median , now we observe that the three median meet inside the triangle  .

As : 

We have three types of triangle , and after paper fonding we get three median ( As we show in red line )  and they meet at ( centroid G )  , that is always inside the triangle  .

 

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