year 8 maths

8D
Congruent figures
483
3 In this diagram △ ABC has been rotated to give the image
triangle △DEF .
a Is △DEF congruent to △ ABC ; i.e. is △DEF ≡ △ ABC ?
b Name the vertex on △DEF that corresponds to:
i A ii B iii C
c Name the side on △DEF that corresponds to:
i AB ii BC iii AC
d Name the angle in △DEF that corresponds to:
i ∠B ii ∠C iii ∠ A
A
B
C
D
E
F
Example 7
4 These two quadrilaterals are congruent. Name the object
in quadrilateral EFGH that corresponds to these objects in
quadrilateral ABCD .
a i A ii D
b i AD
ii CD
c i ∠C ii ∠ A
A
B
D
C
G
H
E
F
5 These two pentagons are congruent. Name the object
in pentagon FGHIJ that corresponds to these objects in
pentagon ABCDE .
a i A ii D
b i AE
ii CD
c i ∠C ii ∠E
6 From all the shapes shown here, find three pairs that are congruent.
A
B
E H I
D
C
G
F
J
A
B
C
D
E
F
G
H
I
J
K
L
M
N
Cambridge Maths NSW
Stage 4 Year 8 Second edition
ISBN 978-1-108-46627-1 © Palmer et al. 2018
Cambridge University Press
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