na-adjective
angular; sharp-pointed
Describes a shape, outline, or feature that has clear angles or sharp points. Often used for facial features, design, or abstract descriptions.
彼の顔立ちは鋭角的で、意志が強そうに見える。
His features are angular, giving him a strong-willed look.
この車のデザインは
The design of this car is characterized by sharp, angular lines.
シャープ is a common loanword for 'sharp' in design or appearance, but 鋭角的 emphasizes angularity more explicitly.
Compound of 鋭角 (acute angle) + 的 (-like, -ish). The exact historical derivation is uncertain, but the word follows a common pattern of forming adjectival nouns from technical terms.