The easiest way to cut a triangle into three equal pieces is to cut it in half and then cut each half into two equal pieces.

Here is an example:

You have a triangle with sides 1, 2, and 3. The first step would be to cut the triangle into halves by drawing 2 lines connecting the midpoint of side 1 to the midpoint of side 2 and then another line connecting the midpoint of side 2 to the midpoint of side 3.

The next step would be to cut each half into two equal pieces by drawing lines through each vertex (the point where two sides meet). These lines will intersect at the midpoints of each side.

The final step is to use these intersections as points for cutting or folding your paper into thirds.

Last modified: September 19, 2022