Triangles can be seen alot through our daily lifes. Here are some examples.
There are many kinds of different triangles. The most common are shown in the pictures below.
The equilateral triangle.
The isosceles triangle.
The right triangle.
The obtuse triangle.
The acute triangle.
Triangle Song Video
History of triangles
A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry.Triangles were mentioned along with other basic geometric shapes 4000 years ago in both Egypt and Babylonia. They're so basic that they probably predate writing.The triangle has contributed to many purposes throughout its lifetime,the egyptians used it for their pyramids,the illuminati for their symbol. Triangles have the sum of their sides 180 degrees. There are exactly 7 types of triangles(Obtuse,Acute,equilateral,semi-equilateral,right,isosceles,and scalene)
Real life situation.
During the discovery of extraordinary activities in the area called the permuda triangle scientists needed to find a shape that could pinpoint the exact location where these activities would happen so that they could help sailors and pilots to avoid that area and travel safely. They tried many shapes but only the triangle worked due to it having three angles,sides,and vertices and its area that fit perfectly.