Triangle and its properties

A triangle is a simple closed curve made of three line segments. It has three vertices, three sides and three angles.

Here we will learn two special types of triangles: Equilateral and Isosceles. A triangle in which all the three sides are of equal lengths and the measure of each angle is 60 degree is called an 'equilateral' triangle , whereas a triangle with two sides equal is called 'Isosceles'. Also, the angles opposite to equal sides of an isosceles triangle are equal and on the basis of this property, we are going to find missing angles of triangles. These also have the proofs for the properties of isosceles and equilateral triangles that use congruence of triangles. If you are yet to learn congruence, you can watch the proofs after you learn congruence of triangles.

The sum of the lengths of any two sides of a triangle is always greater than the third side. This is called Triangle Inequality Theorem.

पैथगोरेअन प्रमेय गणित के सबसे महान विचारों में से एक है| यह पाठ इस सिद्धांत को सिद्ध करेगा| और बार-बार सिद्ध करेगा| पैथगोरेअन प्रमेय के सही होने या नहीं होने के किसी भी संदेह को दूर करने के अलावा (एक ही उपपत्ति किसी भी संदेह को दूर कर देती), यह पाठ किसी भी उपपत्ति को नए और बेहतरीन तरीके से लिखने में सहायक होगी| कॉमन कोर स्टैंडर्ड्स: 8.G.B.6