Perimeter of Polygons
SSAT Middle Level · Flashcards · Recall
SSAT MIDDLE LEVEL · FLASHCARDS
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QUESTION
State the perimeter rule for composite shapes: how do shared edges affect the total perimeter?
QUESTION
What is the perimeter formula for a triangle with side lengths
a
a
a
,
b
b
b
, and
c
c
c
?
QUESTION
What is the perimeter formula for a regular polygon with
n
n
n
sides of length
s
s
s
?
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ANSWER
P
=
n
s
P = ns
P
=
n
s
. Regular polygons have equal sides, so multiply the side length by the number of sides.
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