It categorizes triangles into equilateral, isosceles, scalene, obtuse, right, and acute based on their sides and angles. The video also covers the concept of congruency, demonstrating how two ...

As well as right angles, there are also acute and obtuse angles. An acute angle is very easy to spot; it is any angle smaller than a right angle (0-89 degrees – ah, cute!).. An obtuse angle is ...