Page 97 - Math Course 2 (Book 2)

Transformations: Dilations

Draw a Dilation
1
1
Preimage(x, y) Image ( x, y)
4 4 Which diagram shows the dilation image of ΔLMN
1
E(–8, 4) E'(–2, 1) with center C and r = ?
3

F(–4, 8) F'(–1, 2) A.
G(8, 4) G'(2, 1)

H(–4, –8) H'(–1, –2)

E'(–2, 1), F'(–1, 2),
Answer
G'(2, 1), H'(–1, –2)
B.

C.

D.

Your Turn!

Determine Measures Under Dilations

Find the measure of the dilation image A′B′ using
the given scale factor for AB = 16, r = –2.

A. 2
B. 4
C. 8
D. 32

Answer Answer

Find the measure of the preimage using the given
2
scale factor for A′B′ = 24, r =
3
A. 16
B. 36
C. 48
D. 18

Answer

89