Question

A triangle in which each angle is less than 90 degrees is called ___.

• A. an acute-angled triangle
• B. an obtuse-angled triangle
• C. a right-angled triangle
• D. a scalene triangle

Answer 1

The correct option is A

an acute-angled triangle

A triangle in which each angle is less than 90 degrees is called an acute angled triangle. For example, the triangle shown below is an acute angled triangle.