Translations
Rigid Motions
reflections
miscellaneous
vocabulary
100
what is the algebraic translation for 2 units right and 4 units up
(x,y)->(x+2,y+4)
100
What are the 4 types of rigid motion?
translation, rotation, reflection glide reflection
100
what is the line where the reflection is made?
line of reflection / mirror line
100
2 + 2
4
100
rotational symmetry
radial symmetry in geometry, is the property a shape has when it looks the same after some rotation by a partial turn.
200
if u have a rectangle and want to move it 5 units right and 3 units down. How would you write it in algebraic description?
(x,y)->(x+5,y-3)
200
What is another name for rigid motion?
congruence transformation
200
a triangle is made with the three points (2,2) , (4,4) and (5,2 . What would the points be after reflected?
(-2,2)(-4,4)(-5,2)
200
A + B
AB
200
reflectional symmetry
a figure which does not change upon undergoing a reflection has reflectional symmetry.
300
what is the translation in the image 
(x,y)->(x-4,y+6)
300
To construct the line of reflection for two figures off the coordinate plane, you would construct the....
perpendicular
300
When a reflections is made across the y-axis (x,y) turns into ( , )?
(-x,-y)
300
what is slope intercept
y = mx+b
300
translational symmetry
when something has undergone a movement, a shift or a slide, in a specified direction through a specified distance without any rotation or reflection.
400
what is the translation in the image 
(x,y)->(x+8,y+4)
400
Which rigid motion(s) will verify that ΔABC is congruent to ΔDEF as shown at the right?
a reflection and a translation
400
When a reflection is made across the x-axis . (x,y) turns into ( , )?
(-x,-y)
400
what do two 90 angles equal
180 degrees
400
point symmetry
given a central point on a shape or object, every point on the opposite sides is the same distance from the central point
500
say you have a triangle on coordinates (5,4),(7,3),(1,1). translate it 4 units down and 2 units left what are the new coordinates?
(3,0),(5,-1),(-1,-3)
500
A rigid motion creates figures that are...
congruent
500
What is a reflection ?
When you flip or mirror an object across a line
500
what do two 180 degree angles equal
360 degrees
500
glide reflection
glide reflection is a symmetry operation that consists of a reflection over a line and then translation along that line, combined into a single operation