What are Polygons?
- A Polygon is a closed figure made up of lines segments (not curves) in two-dimensions.
- A minimum of three line segments are required for making a closed figure, thus a polygon with a minimum of three sides is known as Triangle.
Classification of Triangles
In our article on Geometric Shapes, we discussed the polygons with the least number of sides – the Triangle. In this section, we will go through different types of triangles.
- Equilateral triangle – Having all sides equal.
- Isosceles triangle – Having any 2 sides equal.
- Scalene triangle – All 3 unequal sides.
- Acute angled Triangle– Each angle is less than 900
- Right Angled Triangle– Any one angle is 900
- Obtuse Angled Triangle– Any one angle is greater than 900
|An interesting fact about Triangle:
A Quadrilateral is a polygon having the number of sides equal to four.
The table below gives the comparison of Opposite sides, angles, and diagonals of different Quadrilateral.
|Quadrilateral||Opposite||Sides||All sides Equal||Opposite angles equal||Diagonal|
(Only one side)
Polygon: A general comparison
|Polygon||No. of Sides||No. of Diagonal||No. of vertices||Interior Angle|
Three Dimensional Shape (3-D shape)
- These are the shapes that can be projected on a piece of paper but cannot be drawn on a paper. These shapes are known as solids.
|2-D shape (Polygon)||3-D Shape|
- 3-D shapes have Faces as the distinguishing Feature.
To know more about polygons, types of polygons and 3-D shapes, download Byju’s the Learning App.