Line symmetry of the alphabet occurs when a portion of a letter mirrors another portion. When the image is folded, the portions line up exactly. The line of the fold is considered the line of symmetry and can be horizont... More »

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In standard fonts, the letters A, M, T, U, V, W and Y each has a vertical line of symmetry that divides it into two corresponding mirror images. B, C, D, E and K have horizontal lines of symmetry. Both horizontal and ver... More »

In geometry, a line of symmetry is a line that divides a shape into two halves that match exactly, as if reflected in a mirror. Line symmetry is sometimes called reflective symmetry because each point on one side of the ... More »

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A square has four lines of symmetry. One line crosses through each diagonal. The other two lines cross horizontally and vertically through the middle of the square. More »

The number of lines of symmetry of a parallelogram depends on the type of parallelogram. A non-special parallelogram does not have any lines of symmetry. This includes any quadrilateral with two pairs of parallel and equ... More »

The directrix of a parabola refers to a straight line that is drawn perpendicular to the axis of symmetry of a parabola. This line does not touch the parabola at any point. In addition, it is a horizontal line if the axi... More »

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The three main types of symmetry used in mathematics are reflectional symmetry, rotational symmetry and point symmetry. Other less common types of symmetry include translational symmetry, glide symmetry, helical symmetry... More »

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