1) An acute-angled triangle has all angles measuring less than 90 degrees.

2) In a right-angled triangle, the acute-angled triangle is the one without the right angle.

3) A scalene triangle can also be classified as an acute-angled triangle.

4) The acute-angled triangle is commonly seen in geometric illustrations.

5) The sum of the angles in an acute-angled triangle is always less than 180 degrees.

6) In trigonometry, the acute-angled triangle plays a significant role in calculating side lengths and angles.

7) An acute-angled triangle can never have an angle measuring exactly 90 degrees.

8) When designing a roof, an acute-angled triangle may be used for certain architectural elements.

9) The acute-angled triangle is one of the fundamental shapes in Euclidean geometry.

10) Teaching students to identify acute-angled triangles helps build a strong foundation in geometry.