保bou2角gok3

bou2 gok3bǎo jiǎo

English

(math.) angle-preserving
conformal

Examples

一場保角映射：雖然有啲直線變咗曲線，但如果兩條線原本係成直角嘅話，出嚟嘅兩條曲線都會成直角。
Tatoeba · Matthewyau1367 CC BY

Sources: cc-cedict, rime-cantonese

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