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- A 2D shape is symmetrical if a line can be drawn through it and either side is a reflection of the other. The line is called a line of symmetry. This is sometimes called a 'mirror line' or 'mirror symmetry', because if you put a mirror on the line, the reflection would show the whole shape.
www.bbc.co.uk/bitesize/articles/z8t72p3
You can find if a shape has a Line of Symmetry by folding it. When the folded part sits perfectly on top (all edges matching), then the fold line is a Line of Symmetry. Here I have folded a rectangle one way, and it didn't work .
- Reflection Symmetry
Example Shape : Plane Shapes. Not all shapes have lines of...
- Symmetry
Learn about the different types of symmetry: Reflection...
- Reflection Symmetry
A 2D shape is symmetrical if you draw a line through it and it looks exactly the same on either side of the line. Find out more in this KS1 Bitesize guide.
- Symmetry Definition
- Vertical Line of Symmetry
- Horizontal Line of Symmetry
- Diagonal Line of Symmetry
- One Line of Symmetry
- Two Lines of Symmetry
- Infinite Lines of Symmetry
- Translation Symmetry
- Rotational Symmetry
- Reflexive Symmetry
A shape is said to be symmetric if it can be divided into two more identical pieces which are placed in an organized way. For example, when you are told to cut out a ‘heart’ from a piece of paper, you simply fold the paper, draw one-half of the heart at the fold and cut it out to find that the other half exactly matches the first half. The heart ca...
A vertical line of symmetry is that line that runs down vertically, divides an image into two identical halves. For example, the following shape can be split into two identical halves by a standing straight line. In such a case, the line of symmetry is vertical.
The horizontal line of symmetry divides a shape into identical halves, when split horizontally, i.e., cut from right to left or vice-versa. For example, the following shape can be split into two equal halves when cut horizontally. In such a case, the line of symmetry is horizontal.
A diagonal line of symmetry divides a shape into identical halves when split across the diagonal corners. For example, we can split the following squareshape across the corners to form two identical halves. In such a case, the line of symmetry is diagonal. A line of symmetry is an axis along which an object when cut, will have identical halves. The...
Figures with one line of symmetry are symmetrical only about one axis. It may be horizontal, vertical, or diagonal. For example, the letter "A" has one line of symmetry, that is the vertical line of symmetry along its center.
Figures with two lines of symmetry are symmetrical only about two lines. The lines may vertical, horizontal, or diagonal lines. For example, the rectanglehas two lines of symmetry, vertical and horizontal.
Figures with infinite lines of symmetry are symmetrical only about two lines. The lines may vertical, horizontal, or diagonal lines. For example, the rectangle has two lines of symmetry, vertical and horizontal. The following table shows the examples for different shapeswith the number of lines of symmetry that they have. Symmetry can be viewed whe...
If an object is moved from one position to another, with the same orientation in the forward and backward motion, it is called translational symmetry. In other words, translation symmetry is defined as the sliding of an object about an axis. For example, the following figure, where the shape is moved forward and backward in the same orientation by ...
When an object is rotated in a particular direction, around a point, then it is known as rotational symmetry, also known as radial symmetry. Rotational symmetry exists when a shape is turned, and the shape is identical to the origin. The angle of rotational symmetry is the smallest angle at which the figure can be rotated to coincide with itself an...
Reflective symmetry, also called mirror symmetry, is a type of symmetry where one half of the object reflects the other half of the object. For example, in general, human faces are identical on the left and right sides.
When an imaginary line is drawn through a shape to make one side of the line a true reflection of the other (and vice versa), the shape is known as symmetrical. Examples of objects in the real world that are symmetrical include snowflakes, the feathers of peacocks, and the wings of butterflies.
Symmetry defines that the shape is identical on both sides when it is divided by a line. The symmetry of different shapes, regular or irregular. Learn about the symmetry of shapes with examples at BYJU’S.
- 3 min
How do you know if a shape is symmetrical? A 2D shape is symmetrical if a line can be drawn through it and either side is a reflection of the other. You would call this the line of...
Learn about the different types of symmetry: Reflection Symmetry (sometimes called Line Symmetry or Mirror Symmetry), Rotational Symmetry and Point Symmetry.
