Transformation
Which transformation does not preserve congruence?
A-90degrees about the orgin
B-Reflection over the y axis
C-Dilation by a scale factor of 5
D- Translation down 5 units
C
How many lines of symmetry does a square have?
4
If point A is at (2,-2) and point A' is (-4,1) , how did it move??
Up 4, left 6
If a rectangle is 18 square units what is the area of a rectangle after a dilation with a scale factor or 2
72
What is (-6,8) reflected over the y-axis
(6,8)
a transformation representing a flip of a figure.
Reflection
How many lines of symmetry does a hexagon have?
6
a translation that moves points the same distance in the same direction
translation
What is a dilation?
enlarging, expanding, or making something wider or bigger.
what is (4,-1) reflected over the y-axis?
(-4,1)
a transformation that changes the size of a figure so it becomes larger or smaller without changing shape
Dialation
How many lines of symetry does an equalateral triangle have?
3
If point B starts at (-4,1) and pint B' is at (3,1) how much was the trangle translated and what direction
right 7
If A is (0,3) and A' is (0,33), what is the scale factor?
11
reflect (9,4) over the x-axis
(-9,4)
around an axis or center.
rotation
How many lines of symmetry does a decagon have?
10
Every point must move the same distance and direction true or false?
true
Pythagorean theorem?
A2+B2+C2
What is it called when you transform a figure by mirroring the figure across a line?
Reflection
a general term for four specific ways to manipulate the shape and/or position of a point.
A transformation
What is symmetry?
When both sides line up perfectly when a shape is folded in half.
The measure of the angles in a translation can change true or false?
False
What are the three basic rigid motions?
Translation, reflection, and rotation
What is (3,5) reflected over the x-axis
(3,-5)