Polygons Types and Using Daily Life

Triangle
3 sided polygon.

A triangle is a polygon with  three vertices or corners, and TRIANGLE three edges. There are three main types of  triangles an obtuse, acute, and right. An obtuse triangle has one obtuse angle meaning the angle has a degree measure larger then 90 degrees. An acute triangle has three acute angles meaning the angles have a degree measure less than 90 degrees. A right triangle has one right angle meaning the angle has a degree measure of 90 degree.
To find the perimeter of the triangle edges are collected. =a+b+c
The area is; 

According to sides and angles are varieties.

Using in daily life