Congruence and Similarity (II) 9.39
13. A and B are a pair of congruent quadrilaterals. The lengths of
three sides of quadrilateral A are 2 cm, 3 cm and 4 cm, while the
lengths of two sides of quadrilateral B are 3 cm and 5 cm. Find the
perimeter of quadrilateral B.
14. Refer to the figure. Is it possible for quadrilaterals ABCD and EFGH
to be congruent figures?
A D
C
B
E H
F G
20°
120°
85°
15. Refer to the figure. If the perimeters of quadrilaterals ABCD
and PQRS are both 22 cm, is it possible for them to be
congruent figures?
B C
D
A 5 cm
8 cm
6 cm
Q R
S
P
16. (a) P and Q are congruent figures. If the perimeter of P is 30 cm,
find the perimeter of Q.
(b) It is given that the perimeters of rectangles R and S are both
30 cm. Tom claims that rectangles R and S must be congruent.
Do you agree? Explain your answer.
17. Divide the square shown on the right into
(a) two congruent rectangles,
(b) four congruent squares.
Level 3
18. Divide Figure X into four figures which are congruent to
Figure Y.
➥ Example 15
Explain
Figure X Figure Y