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SYMMETRY
This shape is symmetrical.
The shape has one line of symmetry.
Some shapes have more than one line of symmetry.
The shape has two lines of symmetry
How many lines of symmetry?
The shape has three lines of symmetry.
How many lines of symmetry?
The shape has five lines of symmetry.
How many lines of symmetry?
The shape has infinite lines of symmetry.
ROTATIONAL SYMMETRY
How many lines of symmetry?
There are no lines of symmetry but it does have another type of symmetry.
X
It has rotational symmetry of order 4.
How many lines of symmetry?
There are 2 lines of symmetry.
What is the order of rotational symmetry?
X
It has rotational symmetry of order 2.
How many lines of symmetry?
There are 8 lines of symmetry.
X
What is its order of rotational symmetry?
It has rotational symmetry of order 8.
SYMMETRY PROPERTIES OF QUADRILATERALS
X
Square
Number of lines of symmetry = 4
Order of rotational symmetry = 4
X
Rectangle
Number of lines of symmetry = 2
Order of rotational symmetry = 2
Parallelogram
Number of lines of symmetry = 0
Order of rotational symmetry = 2
X
X
Kite
Number of lines of symmetry = 1
Order of rotational symmetry = 1
X
Rhombus
Number of lines of symmetry = 2
Order of rotational symmetry = 2
PLANES OF SYMMETRY
Plane of symmetry or not?
How many planes of symmetry are there in a cuboid?
There are three planes of symmetry.
How many planes of symmetry are there in a cube?
DIAGONAL PROPERTIES OF
QUADRILATERALSnote: an understanding of intersecting diagonal properties is essential for later topics in shape and space
SQUARE RECTANGLE
Diagonals bisect each other
Diagonals cross at 90o
Diagonals bisect each other
RHOMBUS PARALLELOGRAM
Diagonals bisect each other
Diagonals cross at 90o
Diagonals bisect each other
