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Geometrical shapes are all around us. They make up the form and structure of every two-dimensional (2D) and three-dimensional (3D) object. In mathematics—namely geometry—and in real life, geometric shapes are two or three-dimensional figures that can be recognized and categorized based on a specific outline/boundary and other attributes including curves, lines, and angles.
Dec 31, 2020 · 7.1: Regular Polygons A regular polygon is a polygon in which all sides are equal and all angles are equal, Examples of a regular polygon are the equilateral triangle (3 sides), the square (4 sides), the regular pentagon (5 sides), and the regular hexagon (6 sides). 7.2: Circles The circle is one of the most frequently encountered geometric ...
Aug 16, 2024 · Different Types of Shapes 1. 2D (Two-Dimensional) Shapes. Download This Image. Dive into the plane of 2D shapes, where length meets width to create an array of flat figures.. From the simplicity of circles to the complexity of polygons, 2D shapes form the basis of geometric learning and design, offering endless possibilities for creativity and analysis in classrooms and bey
A circle, square, rectangle, and triangle are some examples of two-dimensional shapes and these shapes can be drawn on paper. All the 2 dimensional shapes have sides, vertices (corners), and interior angles, except for the circle, which is a curved figure. 2D shapes with at least three straight sides are called polygons and these include triangles, squares, and quadrilaterals .
An example of a polygon is a triangle with three sides. A circle is also a plane figure but it is not considered a polygon, because it is a curved shape and does not have sides or angles. Therefore, we can say, all the polygons are 2d shapes but not all the two-dimensional figures are polygons.
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For example, the shape of a tree is irregular or organic. In plane geometry, the two-dimensional shapes are flat shapes and closed figures such as circles, squares, rectangles, rhombus, etc. In solid geometry, the three-dimensional shapes are cube, cuboid, cone, sphere and cylinder. We can observe all these shapes in our daily existence also.
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Draw a circle on the whiteboard and ask students to observe it and to reflect whether this figure represents a polygon. Explain that a circle is a closed plane figure. It is not a polygon because it doesn’t have corners or edges. It has a center whose distance to the edge of the circle is always the same. Add that although a circle is not a ...
