Hi, friends and my dear students in this video I have shared some basics of right angled triangle, and pythagoras theorum, through working model You will learn about "Pythagorean Theorem" in this video. To implement the Pythagorean Theorem, a triangle has to be a right-angled triangle. The longest side of a right-angled triangle is always opposite to the 90-degree angle. It is called the hypotenuse. The other 2 adjacent sides are called the legs of the triangle. Pythagorean theorem states that the square of the hypotenuse of a right angled triangle is equal to the sum of the squares of the other 2 sides. If one side = AB, other side = BC and the hypotenuse = AC, then according to Pythagorean theorem, AB^2 + BC^2 = AC^2 Let us understand this with the help of an example. Consider this triangle in which the length of AB = 3 m and the length of BC is 4 m. We need to find the length of AC. By Pythagorean theorem, AB^2 + BC^2 = AC^2 Therefore 3^2 + 4^2 = 9 + 16 = 25 AC^2 = 25 Therefore AC = 5 Hence, length of AC = 5 m students can understand well, I hope this working model will be helpful to teachers as teaching aid.. I am sorry for my mistake, the correct spelling is PYTHAGORAS not pythagorus.. Pls write your views in comment box facebook : www.facebook.com/Keep-Learning-Keep-Growing-1445959175502505/ Thank you