acute angle
(click for larger image in new window) An angle whose measure is between 0° and 90°. Compare obtuse angle. |
An angle that measures less than ninety degrees but more than zero degrees. (Compare obtuse angle and right angle.)
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |