自己的作品. Geometry is based on the following description of the flag found at gov.ie
The National Flag of Ireland, a tricolour of green, white and orange, is intended to symbolise the inclusion of and the aspiration for unity between people of different traditions on this island.
The flag is twice as wide as it is high. The three colours are of equal size and the green goes next to the flagstaff.
A work made by an officer or employee of the Government or State of Ireland in the course of his or her duties, created before 1st January 1974; or
A work made by an officer or employee of either House of the Oireachtas in the course of his or her duties, created before 1st January 1974; or
A sound recording, film, live broadcast or live cable programme of the proceedings of either House of the Oireachtas created before 1st January 1974; or
A bill or enactment of the Government of Ireland made available to the public before 1st January 1974.