Page "Flag of Brazil" Paragraph 21

According to Brazil's national act number 5, 700 of 1 September 1971, the flag portrays the stars as they would be seen by an imaginary observer an infinite distance above Rio de Janeiro standing outside the firmament in which the stars are meant to be placed.

Thus Beta Crucis appears to the right of the constellation and Delta Crucis to the left, in mirror image of the way they actually appear in the sky ( and, coincidentally, the way they appear on the Brazilian coat of arms ).