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Perimeter
To calculate the perimeter of any shape, just add up “each” line
segment of the “fence”.
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Perimeter
• Triangles have 3 sides…add up each sides length.
88
8
8+8+8=24The Perimeter is 24.
3
Perimeter
A square has 4 sides for the fence.
12 12
12
12
12+12+12+12=48The perimeter is 48.
4
Area• Area is the ENTIRE INSIDE of a
shape• It is always measured in “squares” (sq. inch, sq ft)
5
AREA• Square units means“that” many squares
fit inside that shape (if measured in feet…it’s feet…if meters…it’s meters. In this example the area is 4 square units…note 4 squares fit)
2
3 4
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