Geometry

Question Analysis:
This question applies congruency to regular polygon perimeter calculations.

Key Concept Explanation:
Regular pentagons have equal sides and angles.
Congruent regular polygons have identical side lengths.
Perimeter = number of sides × side length.

Step-by-Step Solution:
AB = PQ = 8 cm (corresponding sides)
Regular pentagon has 5 equal sides
Perimeter = 5 × 8 cm = 40 cm

Common Mistakes:
Confusing side length with perimeter.
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