Q: Why does the human body have a line of symmetry?

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the human body only has 1 line of symmetry straight down the middle

bilateral symmetry

A symmetrical shape is said to have line symmetry. A shape that has line symmetry can have one or more lines of symmetry

what makes a line of symmetry is that it has to be shared equel.That is what makes a line of symmetry.

It has line symmetry (straight down the center) but not rotational symmetry.

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the human body only has 1 line of symmetry straight down the middle

Bilateral.

triangle - the human body, most animals, shoes, many table-lamps

A line which divides a body into two parts, such that each part is the mirror image of the others, then the line is called a line of symmetry. If such a line is parallel to the horizontal plane, then it is called a horizontal line of symmetry. Else, if the line of symmetry is perpendicular to the horizontal plane then it is a vertical line of symmetry.

They both use bilateral symmetry

bilateral symmetry

z does not have a line of symmetry. z does not have a line of symmetry. z does not have a line of symmetry. z does not have a line of symmetry.

Humans, like all mammals and other vertebrates, have bilateral symmetry. This means they have symmetry across one plane (known as the sagittal plane, and directly down the centre of their body), which means one side of their body approximately mirrors the other side.

Line symmetry = Reflection symmetry. Point symmetry = Rotational symmetry.

A symmetrical shape is said to have line symmetry. A shape that has line symmetry can have one or more lines of symmetry

One's body has just one line of symmetry. Humans have bilateral symmetry. This means they have symmetry across one plane (known as the sagittal plane, and directly down the centre of their body), which means one side of their body approximately mirrors the other side.

A glide reflection is a combination of translation along some line and reflection in the line. Human footprints are a good example. Glide symmetry is another way to refer to it.