Translations
A translation is when you do this to a figure.
What is move it right, left, up, or down?
What is slide or shift?
A reflection is when you do this to a figure.
What is flip it or make a mirror image of it?
A rotation is when you do this to a figure.
What is spin it?
How do you find the degree of rotation?
What is 360 divided by the order?
What are the 2 qualities that define a regular polygon?
What are:
1. all sides congruent
2. all angles congruent
Find the new coordinates of C(10,12) if you translate the point three units left and 4 units up.
What is C'(7,16)?
Find the new coordinates of A(3,-2) after you reflect the point over the x-axis.
What is A'(3,2)?
What is a transformation about a line called?
What is a reflection?
What is the order of a pentagon?
What is 5?
the original image prior to any transformations
What is pre-image?
Write the mapping rule of point (x,y) after it moves 3 units to the left and 7 units up.
What is (x,y)->(x-3,y+7)?
Write the mapping rule of a reflection over the y-axis.
What is (x,y)->(-x,y)?
A transformation about a point is called what?
What is a rotation?
What is the degree of rotation of a regular octagon?
What is 45o?
an object has ____________ if there is a center point around which the object is rotated a certain number of degrees (360o) and the object looks the same.
What is rotational symmetry?
Describe this translation in words:
(x,y) --> (x + 8, y + 4)
What is a translation of 8 units to the right and 4 units up?
A picture with one point F(-3,4) was reflected over the line x-axis. What should be the new coordinates of the point?
What is F'(-3,-4)?
Transformations that preserve distance and angle measures
What is isometry?
How many lines of symmetry does the letter S have and what is its order?
What is none; 2?
the new image after a transformation has occurred.
What is an image?
List the points of ∆LMN after a translation of <6,-4>. L(0,3) M(6,4) N(3,9)
What is L'(6,-1), M'(12,0), N'(9,5)?
List the points of rectangle DEFG after a reflection over the y-axis. D(5,5) E(5,8) F(8,8) G(8,5)
What is D'(-5,5), E'(-5,8), F'(-8,8), G'(-8,5)?
What is a transformation that shifts/slides every point the same distance in the same direction?
What is a translation?
How many lines of symmetry does a parallelogram have and what is its order?
What is none; 2?
The number of positions in which a figure is rotated and looks exactly the same is called
What is order?