When a point is reflecting over the x axis, what is the algebraic rule?
(x, -y)
What axis did they reflect triangle ABC over to get triangle A'B'C'?
reflection over the y axis
Translate: (1, 3)-->left 2, up 3
What is (-1, 6)?
What is the rule for a rotation of 180 degrees?
(-x, -y)
Name the 3 types of transformations that creates congruent figures
What is Reflections, Translations, and Rotations?
Which transformation would create a figure that has the same shape, size and orientation?
translation
If you reflect a point over the y-axis which coordinate changes? What changes about it?
The x coordinate changes and it becomes the opposite sign.
Translate: (4, 0)--right 1, down 3
What is (5, -3)?
For the transformation shown at the right, what is the measure of the angle of rotation of ABCD about the origin?
90 degrees clockwise
Another way of describing a rotation is a _____________.
turn
What is the rule for a 360 degree rotation?
(x, y) --> (x, y)
Daily Double!!!!!!!!!!!!!!!! Reflect: (-3, 2) over the x-axis.
What is (-3,-2)?
Translate: (-4, 4)--down 6
What is (-4, -2)?
If point B is rotated 180 degrees, what quadrant will B' end up in?
Quadrant II
The commons description of Reflections.
What is "flip?"
What is the line of reflection for Figure ABCD?
x = 2
Reflect: (5, 0) over the x-axis.
(5,0)
Translate: (0, -2)--left 7, down 4
What is (-7, -6)?
Rotate the point (-1,-3) 90 degrees counterclockwise.
(3,-1)
The common description of Translations.
What is slide?
What is the line of reflection?
x = -2
Reflect these points over the x-axis.
A(1, -2)
B(-4, 3)
C(-5, -6)
A'(1, 2)
B'(-4, -3)
C'(-5, 6)
Name the algebraic rule for the translation: (4, -1)--->(3, -6)
(x - 1, y - 5)?
Rotate the point (-1,3) 270 degrees clockwise.
(-3,-1)
Which rotation follows the rule (x , y) becomes (-y, x)?
90 degrees counterclockwise or 270 degrees clockwise