to build on students' knowledge of triangle and develop students' reasoning with properties of different classes of triangles to develop students' language related to the formal geometric names of ...

Image caption, All three sides of an equilateral ... acute-angled triangle. A scalene triangle with angles of 50°, 60° and 70° is an acute-angled triangle. An isosceles triangle with angles ...

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 ...