bisect line oa, join a to b bisect this line, take the centre of oa and project it through the centre of ab so that projected line is equal lenght inside and outside the triangle then take the point at the end of projected line run it back to o. looks like 1 third to me
bisect line oa, join a to b bisect this line, take the centre of oa and project it through the centre of ab so that projected line is equal lenght inside and outside the triangle then take the point at the end of projected line run it back to o. looks like 1 third to me