Congruence and Similarity
ISEE Upper Level · Flashcards · Application
ISEE UPPER LEVEL · FLASHCARDS
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QUESTION
Find
x
x
x
: if
△
A
B
C
∼
△
D
E
F
\triangle ABC \sim \triangle DEF
△
A
B
C
∼
△
D
E
F
and the scale factor is
k
=
4
k=4
k
=
4
(image to original), what is
E
F
EF
E
F
when
B
C
=
7
BC=7
B
C
=
7
?
QUESTION
Identify the missing side: if
△
A
B
C
∼
△
D
E
F
\triangle ABC \sim \triangle DEF
△
A
B
C
∼
△
D
E
F
,
A
B
D
E
=
3
5
\frac{AB}{DE}=\frac{3}{5}
D
E
A
B
=
5
3
, and
A
B
=
12
AB=12
A
B
=
12
, what is
D
E
DE
D
E
?
QUESTION
Identify the conclusion: if
△
A
B
C
≅
△
D
E
F
\triangle ABC \cong \triangle DEF
△
A
B
C
≅
△
D
E
F
, what is the value of
∠
B
−
∠
E
\angle B-\angle E
∠
B
−
∠
E
?
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ANSWER
0
∘
0^\circ
0
∘
. Congruent triangles have equal corresponding angles, so
∠
B
=
∠
E
\angle B = \angle E
∠
B
=
∠
E
, making their difference
0
∘
0^\circ
0
∘
.
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