In geometry, the triangle is the most popular topic and this is necessary to understand for early school students and competitive exam studies. So, what is a Triangle exactly? A Triangle is the most simpler form of a polygon having 3 sides or we can say that the triangle is a two-dimensional figure having three angles and 3 vertices. Also, keep in mind that sum of interior angles would make 180-degree while the sum of exterior angles should be 360-degrees. Let us have a quick look at properties of Triangle now.
In Geometry, Triangles are generally divided into multiple categories based on different attributes like side length or angles etc. Let us discuss on each of the types one by one in the section below.
Based on side length
Based on Angles
For most of the shapes, we need to calculate the area and the perimeter. The area is defined as the region occupied within boundaries of an object or figure. The measurement of area is given in square units. For example, in case of meters, the area would be written as square meters.
To compute the areas of different shapes, there are predefined formulas and the same concept is true for a Triangle as well. For different types of triangle, the formula may be slightly different. Here, we will focus on a standard formula to compute the area of a Triangle as shown in the figure below –
To calculate the perimeter of a Triangle, we generally take the sum of all sides of a shape and the same concept is applicable for Triangle as well. Here, Perimeter of a Triangle formula would be given as –