Symmetry (Edexcel GCSE Maths): Flashcards
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Practise the cards
12 cards from this deck
Alternative name for line of symmetry
Alternative name for line of symmetry
Mirror line
What line of symmetry creates in a shape
What line of symmetry creates in a shape
One half is an exact mirror image of the other half
Method to test if a line is a line of symmetry
Method to test if a line is a line of symmetry
Fold the shape - if halves match perfectly, it's a line of symmetry
Number of lines of symmetry in letter Y
Number of lines of symmetry in letter Y
One (vertical line down centre)
Number of lines of symmetry in a rectangle
Number of lines of symmetry in a rectangle
Two (one horizontal, one vertical through centre)
Number of lines of symmetry in a cross shape
Number of lines of symmetry in a cross shape
Four (horizontal, vertical, and two diagonal)
Definition of rotational symmetry
Definition of rotational symmetry
Shape fits exactly over itself after rotating through certain angle
What order of rotational symmetry tells you
What order of rotational symmetry tells you
How many times shape matches original position during turn
Degrees in one complete turn
Degrees in one complete turn
Order of rotational symmetry for Z-shape
Order of rotational symmetry for Z-shape
Order 2 (at and )
Order of rotational symmetry for cross shape
Order of rotational symmetry for cross shape
Order 4 (at , , , )
Minimum rotational symmetry order all shapes have
Minimum rotational symmetry order all shapes have
Order 1 (they match themselves at )