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 ...

The word equilateral means equal lines ... A right-angled triangle has one angle that is exactly 90°. An obtuse-angled triangle has one angle that is greater than 90°. A triangle may be ...

Equilateral triangle. An equilateral triangle is a triangle ... then it is easy to calculate the third remaining angle. Obtuse-angled triangle. An obtuse-angled triangle is a triangle that has ...