理 means logic, principle and is a JLPT N4 kanji. It has 11 strokes and uses the king / jewel radical (王).
Stroke order · 11 strokes
On'yomi (音読み)
リ
Kun'yomi (訓読み)
ことわり
Radical
王 · king / jewel
Strokes
11
How to remember 理
王 (jewel) + 里: cutting a gem means following the grain lines inside the stone — that inner order is the principle behind things. 料理 (cooking), 無理 (impossible).