Congruence and Similarity (II) 9.47
PracticePractice
Class 9.4
Determine whether each of the following statements is true. [Nos. 1-2]
1. Any two parallelograms are similar figures. Yes�� No
2. Any two squares are similar figures. Yes�� No
3. In the figure, ABCD + EFGH. Find x and y.
B
A
C
D x
100°
15
F
E
G
H
y
8
10
4. Refer to the figure. Explain why it is impossible for quadrilaterals
ABCD and EFGH to be similar figures.
B C
F G
E H
D
A
120°
60°
70°
Exercise 9D
Level 1
Find the unknown(s) in each of the following pairs of similar figures. [Nos. 1-6]
1. ABCD + PQRS 2. ABCD + EFGH
D C
A B
8
12
S R
P
x
Q9
4
1
2
40°
A
E
G
H
F
C
B D
x
y