Geometric Shapes & Figures

Geometric Shapes

Daily we come across many shapes. The things like photo frames, ice-cream cone, ball, block, bricks and many more which we use daily are of different shapes. Shapes are nothing but simple geometric figures which have a specific boundary, interior and exterior surface area. Some shapes are two-dimensional (2-D) where some are three-dimensional (3-D) figures. To draw any of these figures, one begins with a line or a line segment or a curve. Depending upon the number and arrangement of these lines we get different types shapes and figures like a triangle, a figure where three line segments are connected, Pentagon (five line segments) and so on. But every figure is not a complete figure.

GEOMETRIC SHAPES: OPEN & CLOSED FIGURES

A point is a small dot which is the starting point of a line segment. By definition a line segment is a part of line in which a linear lane connecting two points within a line. Different numbers of line segments gives us different figures and such figures may be either open figure or closed figures.

Geometric shapes

Geometric shapes such as a square, rectangle, circles and triangles are few basic 2D shapes.  These figures are collectively called polygons. A polygon is any shape which is flat or plane on a surface of a paper. They have a finite closed boundary made up of fixed number of line segments and are called sides of the polygon. Each side meet at a common point called corners (vertex).

 Such bounded geometric shapes like Polygons are called closed figures. A boundary of a closed figure is not only made of line segments but also by curves. Hence, a closed figure can be defined as any geometric shape which starts and ends at the same point to form a boundary by line segments or by curves.

Geometric shapes

Open figures are incomplete shapes. To sketch a closed figure one has to meet both starting point and ending point. Open figures are also depicted by using line segments or by curves but at least of the lines will be discontinuous. An open figure’s starting and end points are different.

Geometric shapes

Solve: Find the open figure from the following.

Geometric shapes

Solution:  Correct answer is figure B. All other figures are closed figures where both the start and end points are same.

To solve more problems on geometric shapes, download  download Byju’s – The Learning App from Google Play Store and watch interactive videos. Also, take free tests to practice for exams.

To solve more problems on geometric shapes, download  download Byju’s – The Learning App from Google Play Store and watch interactive videos. Also, take free tests to practice for exams.


Practise This Question

The outline of a half moon can be best described as a