Two-dimensional shapes - Orchids The International School
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Geometry

Two-dimensional shapes

In geometry, 2-D shapes are completely flat and have only two dimensions – length and width. They do not have any thickness and can be measured only by the two dimensions. There are different types of 2-D shapes, which are open figures and closed figures.

Open and Closed Figures

Open figures do not begin and end at the same point.

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Closed figures begin and end and the same point.

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In our surroundings, we could see some different types of closed figures commonly. Here we discuss some of these closed figures.

These are triangles, squares, rectangles and circles.

Triangle:A triangle is a 2D shape with three sides and three corners.

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Traffic signs, pizza, sandwiches etc are in the shape of a triangle.

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Rectangle:A rectangle is a 2D shape with four sides and four corners.

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A blackboard, door, brick etc are in the shape of a rectangle.

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Square:A square is a 2-D shape with four sides and four corners. All sides of squares are equal.

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The chessboard, bread etc are in the shape of a square.

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Circle:A circle is a closed 2-D shape made up of a curved line with no sides and no corners. A circle has various parts like centre, radius, diameter, circumference, and so on.

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In real life coins, plates, pizza, etc. are examples of the circle.

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