Identify the type of angles in the triangle. Acute angles (less than 90°). Right angle (exactly 90°), marked with a square. Obtuse angles (greater than 90° and less than 180°). Using the ...

Obtuse-angled triangle. An obtuse-angled triangle is a triangle that has one obtuse angle. Acute-angled triangle. In an acute-angled triangle, all three angles are acute. Produced by ABC Education ...

A right angle is represented by a little square. If an angle is less than 90 degrees, it is called an acute angle. See how cute it is? If an angle is greater than 90 degrees, but less than 180 ...