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Recognize a line of symmetry for a two-dimensional figure as a line across the figure such that the figure can be folded along the line into matching parts. Identify line-symmetric figures and draw lines of symmetry.
Some shape may have two or more lines of symmetry like a circle has infinite lines of symmetry. A square has four lines of symmetry. A rectangle has two lines of symmetry.
- Congruence
- Symmetry
- Reflection
Mathematics is full of complex terminology, but sometimes a complicated term can mean something really simple. This is true for congruence. Two shapes that are congruent have the same size and the same shape. It’s as simple as that! In the diagram below, shapes A, B, C and Dare all congruent. Shapes E, F, G and H are not congruent. Now take your tr...
A shape can be described as symmetrical if it has a property that mathematicians refer to as symmetry. The simplest form of symmetry is line symmetry. Line symmetry is a form of reflection (which is covered later in this page) and is sometimes referred to as mirror symmetry. This means that if you were to place a mirror along the line of symmetry, ...
In the section on mirror symmetry above, we learned that if a mirror is placed along the line of symmetry, then the reflected image looks the same as the image without the mirror. This is a specific type of reflection. A mirror line or line of reflection can exist anywhere relative to a shape, not just along a line of symmetry. The image of the sha...
A shape or an object can have multiple lines of symmetry as per its structure. Shapes with one line of symmetry have only one line that divides them into identical parts. Shapes with multiple lines of symmetry have more than one line that divides them equally.
Grade. 7. Grade. 8. Schedule a free class. Table of. What is Lines of Symmetry? The axis or imaginary line that passes through the centre of the shape or object, and divides it into identical halves is known as the line of symmetry. The Line of Symmetry for Different Geometric Shapes. Triangles: A triangle can have 3, 1, or no lines of symmetry.
Sometimes you can fold a shape in half, and if it fits into itself perfectly with no overlaps you have found a line of symmetry. Some shapes have more than one line of symmetry. Let's look at...
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How can a shape be described as symmetrical?
Can a shape have multiple lines of symmetry?
Does a symmetrical figure have more than one line of symmetry?
How do you know if a 2D shape is symmetrical?
What if a shape does not have symmetry?
How do you draw a symmetric shape?
Key points. To understand symmetry a good understanding of shapes, including regular polygons and triangles, can be helpful. There are two types of symmetry: reflective and rotational. If...
