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A trapezoid and a scalene triangle are two common shapes that have no lines of symmetry.

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Q: What are two shapes that don't have lines of symmetry?

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Ellipses and non-square rectangles have two lines of symmetry.

nobody knows its a mystery.

A decagon and any polygon above a pentagon has more than two lines of symmetry

Shapes that only have two lines of symmetry:SquareRectangleParallelogram

The only known shapes with two lines of symmetry are rhombus and rectangles. These shapes are found by the test of line of symmetry of certain shapes.Sketch a rectangle, which has two pair of congruent and parallel lines and all right angles. Indicate the lines of symmetry. They should pass through each opposite midpoint of the segments of the rectangles.Sketch a rhombus, the shape that has all congruent sides, but have two pairs of congruent angles, which are different from another. Indicate the lines of symmetry. They should pass through both opposite vertices of the rhombus.

A life has four lines of symmetry for all shapes like this have the same number of sides as lines of symmetry.😃

Lines of symmetry

Circles and Ovals DO have lines of symmetry: a circle has an infinite number of them (each is a diameter of the circle) and an oval (ellipse) has two (one along the major axis, one along the minor axis). Shapes which have no lines of symmetry are irregular ones, eg scalene triangles, along with most parallelograms (ie parallelograms which are not rhombuses) and non-isosceles trapezia. Some irregular shapes can have lines of symmetry, eg irregular octagons can have 1, 2 or 4 lines of symmetry as well as no lines of symmetry, unlike a regular octagon which [always] has 8 lines of symmetry.

There are no lines of symmetry.

In this font it has two lines of symmetry.

A nephroid has 2 lines of symmetry.

A parallelagram can be a square, which has four lines of symmetry or a rectangle which has two lines of symmetry but the generic parallelagram has zero lines of symmetry