Describe objects that have each of the following type of symmetry
(a) line
(b) point
(c)plane
(d) 90% rotational
(a) Objects with line symmetry also known as reflective symmetry are symmetrical along a line. This means that if you were to fold the object along that line, both sides would match exactly. Some examples of objects with line symmetry include a square, rectangle, regular hexagon, letter X, or the letter H.
To identify line symmetry in an object, imagine drawing a line across the object and see if both halves of the object are identical.
(b) Objects with point symmetry, also known as radial symmetry or rotational symmetry, have a central point around which they are symmetrical. This means that if you were to rotate the object by a certain angle (usually multiples of 360 degrees divided by the number of symmetrical parts), it would look the same. Some examples of objects with point symmetry include a circle, regular pentagon, or the simple smiley face.
To identify point symmetry in an object, imagine rotating the object around a central point and see if it maintains its original shape.
(c) Objects that possess plane symmetry, or mirror symmetry, are symmetrical on a flat surface. This means that if you were to reflect the object along the plane, both sides would be identical. Examples of objects with plane symmetry include a square, rectangle, or a regular hexagon.
To identify plane symmetry in an object, imagine placing a mirror behind it and see if the reflection matches the original shape.
(d) Objects with 90% rotational symmetry have rotational symmetry of 90 degrees. This means that if you were to rotate the object by 90 degrees, it would look the same. Some examples of objects with 90% rotational symmetry include a square, regular octagon, or a diamond shape.
To identify 90% rotational symmetry in an object, imagine rotating the object by 90 degrees and see if it maintains its original shape.