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There are two that I can think off of the top of my head: a rectangle and a rhombus. Answer Lots of them. The ones listed are good, but there are many others. An elipse is but one more. And these are all planar. Add a third dimension. The question does not limit the answers to things in an x-ysystem.rectangledon't question it!
not all shapes have lines of symmetry. one example is a triangle.
It depends on how many sides that it has and whether of not it is regular (all the lines of the polygon are of equal length if it is a regular polygon). For regular polygons, the number of symmetry lines is the number of sides if number of sides is an odd number. Otherwise, the number of symmetry lines is double the number of sides. A square has 4 sides and 8 symmetry lines; a triangle has 3 sides and 3 symmetry lines.
All regular octagons have the same number of lines of symmetry, but octagons with unequal sides would have fewer lines of symmetry.
A rhombus is similar to a parallelogram.However,in a rhombus all sides are parallel and equal.The same applies to the angles.{all are equal}.It contains 2 lines of symmetry.
A rhombus is a polygon. A rhombus is a 4 sided shape and an 'equilateral quadrilateral' (all sides are the same length). Opposite angles are equal in a rhombus. A rhombus can tessellate. A rhombus has two lines of symmetry, joining its opposite corners. A rhombus also has rotational symmetry. A kite is a rhombus, and has rotational symmetry of both 180 degrees as well as 360 degrees, A rhombus is not a regular polygon as all angles have to be congruent for it to be classed as regular.
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.
1 that is all
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There are two that I can think off of the top of my head: a rectangle and a rhombus. Answer Lots of them. The ones listed are good, but there are many others. An elipse is but one more. And these are all planar. Add a third dimension. The question does not limit the answers to things in an x-ysystem.rectangledon't question it!
not all shapes have lines of symmetry. one example is a triangle.
If your asking what shape has three lines of symmetry, your answer would be an equilateral triangle. You can tell how many lines of symmetry a shape that has all angles of the same measure has by looking at it's angles. Ex., pentagon has five angles--five lines of symmetry; octagon has eight angles, eight lines of symmetry; etc.
It depends on how many sides that it has and whether of not it is regular (all the lines of the polygon are of equal length if it is a regular polygon). For regular polygons, the number of symmetry lines is the number of sides if number of sides is an odd number. Otherwise, the number of symmetry lines is double the number of sides. A square has 4 sides and 8 symmetry lines; a triangle has 3 sides and 3 symmetry lines.
All regular octagons have the same number of lines of symmetry, but octagons with unequal sides would have fewer lines of symmetry.
Some have symmetry , but not all !!! Square, Rectangle, Rhombus, Kite all have symmetry. A trapezium can be both asymmetric, and symmetric.
Not all 4 sided quadrilaterals have lines of symmetry although some of them do have lines of symmetry.