# How do you find the line of symmetry?

## How do you find the line of symmetry?

Follow 4 steps to use an equation to calculate the line of symmetry for y = x 2 + 2x Identify a and b for y = 1x 2 + 2x. a = 1; b = 2 Plug into the equation x = -b/2a. Simplify. The line of symmetry is x = -1.

What are symmetrical shapes?

A geometric shape or object is symmetric if it can be divided into two or more identical pieces that are arranged in an organized fashion. This means that an object is symmetric if there is a transformation that moves individual pieces of the object but doesn’t change the overall shape.

### What are the types of symmetry in geometry?

Three types of mathematical symmetry are commonly found in tessellations. These are translational symmetry, rotational symmetry, and glide reflection symmetry. Recall when reading this lesson that tessellations extend to infinity; the diagrams shown below are finite portions of infinite tessellations.

What are lines of symmetry in math?

Vertical Line of Symmetry. A vertical line of symmetry is that line that runs down vertically,divides an image into two identical halves.

• Horizontal Line of Symmetry.
• Diagonal Line of Symmetry.
• One Line of Symmetry.
• Two Lines of Symmetry.
• Infinite Lines of Symmetry.
• To find the line of symmetry algebraically, you need to identify if the equation is written in standard form or vertex form. Standard form is y = ax^2 + bx + c, where a, b, and c equal all real numbers.

#### What are two lines of symmetry?

An oval has two lines of symmetry. A line of symmetry is defined as the line that a figure can be divided into half, with the end result of the two halves matching up exactly. Each side of the divided side looks like a mirror image. An oval figure can be divided down the middle,…

What does lines of symmetry mean?

A line of symmetry is a line that divides a figure into two corresponding parts, each of which is the mirror image of the other. The line of symmetry is also called the mirror line and can occur in any direction.