Tell whether the following scale factors represent an enlargement
or a reduction.
1)
1/4 _____________________
5) 7/5 _____________________
2) 3/2 _____________________
6) 2/3 _____________________
3) 0.8 _____________________
7) 0.99 _____________________
4) 1.25_____________________
8) 2 ½ _____________________
Give the scale factor for each of the pairs of similar figures.
9)
10)
Scale Factor ____________
11)
Scale Factor ____________
12)
Scale Factor ____________
Scale Factor ____________
Graph the dilations using the given scale factor.
1.
Write a rule for the dilation.
Graph the dilated image of quadrilateral DEFG using a
scale factor of 1.5 and the origin as the center of dilation.
D ​_______
D’ ​_______
E_
​ ______
E’ ​_______
F ​_______
F’ ​_______
G_
​ ______
G’ _
​ ______
Rule: _________________________
2.
Graph the dilated image of triangle RED using a scale factor
of 2/3 and the origin as the center of dilation.
R_
​ ______
R’ ​_______
E_
​ ______
E’ ​_______
D ​_______
D’ ​_______
Rule: _________________________