PSG win 13th French title ahead of Aston Villa Champions League clash
PSG needed just a draw in front of their own fans to be confirmed as champions again, having started the day a huge 21 points clear of nearest challengers Monaco with seven matches left.
Desire Doue's strike early in the second half decided the game in PSG's favour, allowing Luis Enrique's team to take the title with six matches still to play.
It is a fourth consecutive Ligue 1 title for the club from the French capital and their 11th in the last 13 seasons, highlighting the extent to which they have dominated domestically since being taken over by Qatar Sports Investments in 2011.
"Our ambition is to win everything," said captain Marquinhos, who has now won 10 titles since joining the club in 2013, to broadcaster beIN Sports.
"It is a nice feeling. It is the reward for the work we have put in throughout the season, for our consistency, and the team deserves it," added the Brazilian centre-back, who will be suspended for the first leg against Villa.
PSG's overall tally of 13 French league titles is three more than Saint-Etienne, who are the next most successful club with 10 but have not been champions since 1981.
Marseille have won nine titles, while Nantes and Monaco have each been champions on eight occasions.
The extent to which winning the French league has become a routine exercise for the Parisian outfit helps explain why celebrations were far from excessive on a beautiful spring day in the city.
However, Luis Enrique was raised aloft by members of his coaching staff while the PSG players undertook a lap of honour of the Parc des Princes pitch.
The trophy ceremony will take place at a later date, with PSG maintaining their focus on the European clash with Villa, who visit the Parc des Princes for the first leg of their quarter-final on Wednesday, before the return in England on April 15.
Unbeaten season?
However, PSG have another objective in their sights in the league, one which would make this title triumph stand out above all others.
They remain undefeated after 28 matches, with 23 wins and just five draws, and are on course to become the first team to complete a Ligue 1 campaign without losing a game.
The closest any French side has come to an unbeaten season remains Nantes, who went undefeated through their first 32 matches before losing their only game on the way to winning the title in 1994/95.
That was a 38-game season, while PSG will only play 34 matches in this campaign, with the league having recently been reduced from 20 clubs to 18.
They will not play again in Ligue 1 until a home meeting with Le Havre on April 19, with next week's trip to Nantes postponed to April 22 in order to allow PSG to recover in between the two legs of their tie against Villa.
Ousmane Dembele, PSG's top scorer with 32 goals in all competitions this season, was rested at kick-off against Angers, having netted twice in the 4-2 midweek win over second-tier Dunkerque in the semi-finals of the French Cup.
Bradley Barcola, the team's second-top marksman on 18 goals, was also left out of the starting line-up and it was far from a vintage performance by the home side.
They were perhaps fortunate early on when Angers forward Esteban Lepaul ran through on goal before being outmuscled by Willian Pacho, the challenge a fair one in the eyes of the referee.
Doue was on hand to convert from a Khvicha Kvaratskhelia cross 10 minutes into the second half as he scored his 11th goal in all competitions since signing from Rennes at the start of the season.
That proved enough for PSG to win the game and take the title, maintaining Luis Enrique's record of having won every domestic trophy since he took over prior to last season.
Monaco are in action later away to Brest, while Lyon host Lille in Saturday's other Ligue 1 game, a key encounter in the fight for Champions League qualification.