# Project Euler #163: Cross-hatched triangles

# Project Euler #163: Cross-hatched triangles

felippejcampos + 0 comments Since is an equilateral triangle all straight lines drawn from each vertex to the middle of the opposite side is also a height. In each height of an equilateral triangle we get an angle bisector, so we actually found four different angles to form new triangles. There are three types of triangles:60-60-60, 30-60-90, 30-30-120. Pay attention on directions formed by these divisions, parallel segments will help to count those triangles. It is possible to find a closed formula for this problem

kannanbaskaran10 + 0 comments scince it is an equilateral triangle all straight lines drawn from each vertex to the middle of the opposite side is also a height.Pay attention on the directions formed by the divisions,parallel segments will help to count those triangles.It is not possible to find a close formula for this problem

imhkmr + 0 comments Can anybody help me in this problem...?

prince587 + 0 comments As in the size two triangles we will be having 4 size 1 triangles i.e minimum number of triangle of any size will be 16*4=64. I am not getting how to find the rest as per the discussion below considering angles also apart from 30,60,90 which is the case of special triangle we can judge that rest triangle will be having minimum two angles equal so as to make two two opposite sides euqal. But How we can consider the angle parameter...

Please help me in solving this.

kailashnath114 + 0 comments Failing the testcases 2,3,8,9. Any hints on what could be the cause. I have tried some small numbers for which I calculated the triangles and I got correct results through my code.

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