Module 3: Mathematical Transformation Flashcards
what does a figure have with respect to a given line, if the figure on one side of the line is a mirror image of the other
symmetry
divides the figure into 2 congruent (same shape and size) parts
line of symmetry
also called a flip. a transformation that creates symmetry on a plane
reflection
the line across which you reflect a figure
line of reflection
what kind of line of reflection flips across
horizontal reflection
what kind of line of reflection flips up/down
vertical reflection
a movement is done by sliding a figure from one point to another about a plane
translation
a transformation that turns a figure about a fixed point called
center or rotation
a figure has _____ if, after a rotation of 180 degrees or less, its image fits precisely on top of the original figure
rotational symmetry
an infinite strip with a repeating pattern and all of these patterns have ____
frieze pattern/border pattern; translation symmetry
it has the translation symmetry common to all frieze patterns. it is a combination of a translation and a reflection
glide reflection symmetry