A triangle with tree acute angles.

A triangle whose angles are all of a degree measure less than 90.

a triangle whose interior angles are all acute

a triangle that has three acute angles

a triangle whose angles are all acute (i

a triangle whose three angles are all Acute

a triangle withe all acute angles

An acute triangle is one where all three angles are acute. Acute angles have values less than 90 degrees.

a triangle in which all angles measure less than 90

All three interior angles of an acute triangle are acute (less than 90 degrees).