Grade 3 Polygon & Missing Side Challenge
Perimeter is the total distance all the way around the outside of a shape.
1. Finding Total Perimeter: Add all outer side lengths together.
• Perimeter = Side 1 + Side 2 + Side 3 + ...
2. Finding a Missing Side (?):
• Add up all known sides first.
• Subtract that sum from the given Total Perimeter!