Terms, Definitions, T/F, Fill in the Blank
A transformation that changes the size but not the shape of a geometric figure
dilation
Preimage: (2, 2) Image: (4, 4)
scale factor x 2
Preimage: (70, 20) Scale factor: 1/10
(7, 2)
(X, y) ------ ( 3X, 3Y ) is a _________
Enlargement- Scale factor x 3
a Scale factor less than 1 is a ..
reduction
Preimage: (7, 8) Image: (56, 64)
scale factor x 8
Preimage: (3, 8) Scale factor: 5
(15, 40)
What is the NEW PERIMETER if the Old Perimeter =10 with a scale factor of 3?
New Perimeter = 10 x 3 = 30
the Number multiplied to make a larger or smaller image
scale factor
Preimage: (6, 3) Image: (2, 1)
What is 1/3 or 0.333333?
Preimage: (30, 70) Scale factor: 3/2
(45, 105)
What is the NEW AREA if the old AREA is 15 a scale factor of x 3?
New AREA = 15 x 3 x 3= 135
Tscale factor that is Greater than 1 is a
enlargement
Preimage: (6, 7) Image: (60, 70)
Scale Factor x 10
Preimage: (28, 83) Scale factor: 5
(140, 415)
What happens to (x,y) --(x,y)
stays the SAME= Congruent
Similar figures have the SAME Shape but Different _______?
SIZE
Preimage: (53.7, 35.8) Image: (161.1, 107.4)
Scale Factor x 3
Preimage: (222, 17) Scale factor: 34
(7548, 578)
to Find the SCALE FACTOR divide __________
New or image
original pre-image