2. For the patterns shown below, using sharpened pencils, identify the rule for each (where n represents
the number of shapes) and also the number of pencils required to make the respective patterns.
Δ
(1)
Δ
Δ
ΔΔΔ ΔΔ
ΔΛΔ
(2)
(2)
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Answer:
number of pencil needed are 32
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