Triangles are threesided polygons with different types of angles from "summary" of Maths Mate – 6 NEW by Madhubun
A triangle is a polygon that has three sides and three angles. The total of these three angles is always 180 degrees. Triangles can be classified based on the measure of their angles. An acute triangle is a triangle in which all three angles are less than 90 degrees. A right triangle has one angle that measures 90 degrees. In an obtuse triangle, one angle is greater than 90 degrees. Triangles can also be classified based on the length of their sides. An equilateral triangle has all three sides of equal length. An isosceles triangle has two sides of equal length. A scalene triangle has all three sides of different lengths. The sum of the lengths of any two sides of a triangle must be greater than the length of the third side. This property is known as the Triangle Inequality Theorem. Triangles are used in various mathematical calculations and applications, such as finding the area of a triangle, determining unknown angles, and solving real-world problems involving shapes and angles. Understanding the properties of triangles is essential in geometry and trigonometry.
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