Dilations
Similar Polygons
Solving Similar Polygons
Naming Similar Polygons
100
A dilation maps quadrilateral KLMN onto quadrilateral PQRS. Is the dilation a reduction or an enlargement?
Enlargement
100
Triangle ABC has vertices A (2,4) and B (4,6)
Triangle is dilated by a factor of 3, what are the new coordinates?
(6,12) (12,24)
100
What changes when a figure is dilated?
the size
100
Are the two triangles similar?
Yes
200
A dilation maps quadrilateral ABCD onto quadrilateral WXYZ. What is the similarity ratio of the dilation? 
10
200
Triangle ABC has vertices A (2,4) and B (4,6)
Triangle is dilated by a factor of 5, what are the new coordinates?
(10,20) (20,30)
200
Solve for x
x = 12
200
Finish the similarity statement:
Triangle ABC ~ ...
ABC ~ DEF
300
These rectangles are the result of an enlargement. What was the similarity ratio of the dilation?
3/2
300
Triangle ABC has vertices A (2,4) and B (4,6)
Triangle is dilated by a factor of 1/2, what are the new coordinates?
(1,2) (2,3)
300
Solve for the value of x
x = 20
300
Finish the similarity statement:
Triangle RST ~ ...
RST ~ DEF
400
A dilation maps triangle YXZ onto triangle ABC. What is the similarity ratio of the dilation? 
3/4
400
Triangle ABC has vertices A (2,4) and B (4,6)
Triangle is dilated by a factor of 1/4, what are the new coordinates?
(1/2, 1) (1, 3/2)
400
Solve for the missing side
12
400
Finish the similarity statement:
Triangle ABC ~ ...
ABC ~ ADE
500
A dilation maps quadrilateral EFGH onto quadrilateral ABCD. What is the similarity ratio for the dilation?
3/2
500
Triangle ABC has vertices A (2,4) and B (4,6)
Triangle is dilated by a factor of 1/7, would the image be an enlargement or reduction?
reduction
500
Solve for y
y = 9
500
Finish the similarity statement for the three triangles:
Triangle ABC ~ ...
ABC ~ DEF ~ GHK