保角

bǎojiǎo
  1. (math.) angle-preserving
  2. conformal

CEDICT

math

Entry Composition

1 保 bǎo
  1. to defend; to protect; to keep
  2. to guarantee; to ensure
  3. (old) civil administration unit in the baojia 保甲 bǎojiǎ system
2 角 jiǎo
  1. angle
  2. corner
  3. horn
  4. horn-shaped
  5. unit of money equal to 0.1 yuan, or 10 cents (a dime)

classifier: 個