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Triangles ABC and DEF are similar. AB = 6 cm and DE = 9… | StemPy Lab
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Triangles ABC and DEF are similar. AB = 6 cm and DE = 9 cm are matching sides, and the perimeter of triangle ABC is 28 cm. What is the perimeter of triangle DEF?
Mathematics
Medium
High School (9–10)
General
Geometry › Triangles
Board Exam
SAT
Created by
StemPy Lab
Triangles ABC and DEF are similar.
A
B
=
6
cm
AB = 6\ \text{cm}
A
B
=
6
cm
and
D
E
=
9
cm
DE = 9\ \text{cm}
D
E
=
9
cm
are matching sides, and the perimeter of triangle ABC is
28
cm
28\ \text{cm}
28
cm
. What is the perimeter of triangle DEF?
18.7
cm
18.7\ \text{cm}
18.7
cm
31
cm
31\ \text{cm}
31
cm
42
cm
42\ \text{cm}
42
cm
63
cm
63\ \text{cm}
63
cm
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← On the sides LM and LN of triangle LMN, the points X and Y are marked with LX = 4 cm, XM = 6 cm, LY = 6 cm and YN = 9 cm. Is XY ∥ MN?
Two right-angled triangles have equal hypotenuses, and one side of the first is equal to one side of the second. Which rule shows that they are congruent? →
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