The Collaborative International Dictionary
Acute-angled
Acute-angled \A*cute"-an`gled\ (-[a^][ng]"g'ld), a. Having acute angles; as, an acute-angled triangle, a triangle with every one of its angles less than a right angle.
Wiktionary
acute-angled
a. (context geometry English) Of a triangle, having three acute angles.
Usage examples of "acute-angled".
It would never attain to that generality of the concept, which makes it applicable to all triangles, whether right-angled, or acute-angled, or anything else, but would always be restricted to one portion only of the sphere of the concept.