Transformations
Transformation Rules
Symmetry
Vocab
100
Give the coordinates for the image A(-3,-6) B(-5,-4) after a translation 4 units to the right and 3 units up
A' (1,-3) B'(-1,-1)
100
Write a rule to describe the transformation
B(-3,5) B'(-5,-3)
(x,y)------->(x-2, y-8)
100
How many lines of symmetry
2
100
perpendicular lines
intersect to form right angles
200
Give the coordinates for the image A(-3,-6) B(-5,-4) after a reflection over the x-axis
A'(-3,6) B'(-5,4)
200
Write a rule to describe the transformation
D(-9,-4) D'(0,-1)
(x,y)---------->(x+9,y+3)
200
How many lines of symmetry
5
200
segment bisector
a line, segment, or ray that divides a segment into two congruent segments
300
Give the coordinates for the image A(-3,-6) B(-5,-4) after a rotation of 90 degrees
A'(6,3) B'(4,-5)
300
Rotation
a transformation that turns a figure about a fixed point
300
Does the figure have rotational symmetry?
Yes, 180 degrees
300
angle bisector
a ray that divides an angle into two congruent angles
400
image
the figure you get after a transformation
400
reflection
a transformation that flips a figure over a line of reflection
400
Does the figure have rotational symmetry?
Yes, 72 degrees
400
perpendicular bisector
a line, segment, or ray that is perpendicular to the segment it bisects
500
transformation
a change of position or size of a figure
500
reflectional symmetry
when one half is a mirror image of the other half
500
rotational symmetry
if you can rotate a figure 180 degrees, or less, so that it's image matches the original figure
500
line of symmetry
divides a figure with reflectional symmetry into two congruent halves