2D Geometric Shape Definitions and Examples
Introduction
What are 2D shapes? 2D shapes are plane figures that have length and width but no depth. In other words, they are flat. This is in contrast to 3D shapes, which have length, width, and depth. There are many different types of 2D shapes, each with their own definition and set of properties. In this blog post, we will go over some of the most common 2D shapes and provide examples of each. By the end of this post, you should have a good understanding of what 2D shapes are and how to identify them.
What are 2D Shapes?
Two-dimensional shapes are flat, like a piece of paper. You can draw them on a piece of paper or on a chalkboard. Examples of two-dimensional shapes are:
-A circle
-A square
-A rectangle
-A triangle
Difference Between 2D and 3D Shapes
Geometric shapes are the building blocks of our physical world. We see them everywhere we look, from the simple shapes of a child’s drawing to the more complex shapes found in nature and architecture.
But what exactly are geometric shapes? And what is the difference between 2D and 3D shapes?
Geometric shapes are simply shapes that can be described using mathematical terms. This includes basic shapes like squares, circles, and triangles, as well as more complex shapes like cylinders, spheres, and pyramids.
2D shapes are flat, while 3D shapes are not. 2D shapes have length and width but no depth, while 3D shapes have length, width, and depth.
2D shapes are typically easier to draw than 3D shapes. This is because they require less planning and fewer lines. However, 3D shapes often look more realistic and can be more fun to observe.
Properties of 2D Shapes
There are certain properties that are unique to two-dimensional shapes. For example, all 2D shapes must have:
-A Perimeter: This is the distance around the outside of the shape. To find the perimeter of a rectangle, you would add the length of each side together. So, if a rectangle has sides that are 5 cm long and 4 cm wide, then its perimeter would be 5 + 5 + 4 + 4 = 18 cm.
-An Area: This is the amount of space inside the shape. To find the area of a rectangle, you would multiply the length by the width. So, using our same rectangle from before, if it has sides that are 5 cm long and 4 cm wide, then its area would be 5 x 4 = 20 cm².
Area and Perimeter of 2D Shapes
Area is the measure of how much space is inside a two-dimensional figure. Perimeter is the distance around the outside edge of a two-dimensional figure. The area of a shape can be found by counting the number of unit squares that fit inside the shape. The perimeter of a shape can be found by adding up the lengths of all the sides of the shape.
Two-dimensional shapes are flat figures that have length and width but no depth. They can be categorized into three groups: polygons, circles, and irregular shapes.
Polygons are closed figures made up of line segments that intersect at their endpoint to form angles. The three simplest polygons are triangles, quadrilaterals, and pentagons. A triangle has three sides and three angles. A quadrilateral has four sides and four angles. A pentagon has five sides and five angles.
Circles are shapes with curved lines that form a closed loop around a central point called the center. Circles have no straight sides or angles. The circumference is the distance around the outside edge of a circle, and it can be found using the formula C = ?d, where d is the diameter of the circle (the distance across it). The area of a circle can be found using the formula A = ?r², where r is the radius of the circle (the distance from its center to its edge).
Conclusion
In conclusion, there are a variety of 2D geometric shapes that can be classified according to their properties, such as the number of sides and angles. These shapes can be further divided into categories such as regular and irregular polygons, convex and concave polygons, and so on. Although we have only scratched the surface when it comes to 2D geometry, hopefully this article has given you a better understanding of some of the basic concepts.
