To become angry or lose one's temper (intransitive): to feel anger or get mad.
彼はちょっとしたことですぐ怒る。
He gets angry easily over small things.
そんな言い方をされたら誰でも怒るよ。
Anyone would get angry if spoken to like that.
会議で不公平な扱いを受けて、彼は怒った。
He got angry at being treated unfairly in the meeting.
To scold or tell someone off (transitive). In Japanese it is often heard in the passive form (〜に怒られる) meaning 'to be scolded by ~'.
先生が遅刻した学生を怒った。
The teacher scolded the student who was late.
昨日、母に宿題を忘れたことで怒られた。
Yesterday I was scolded by my mother for forgetting my homework.
彼の無責任な発言でみんなが怒られた（＝叱られた）。
Because of his irresponsible remark, everyone was scolded.