POLYGONS

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Across
  1. 3. This building has 5 sides and is the headquarters of U.S Department of Defense.
  2. 5. These polygons have three sides and three vertices.
Down
  1. 1. These shapes have four sides and four vertices.
  2. 2. A decagon has ______ sides.
  3. 4. These has 8 sides and 8 vertices.
  4. 6. A hexagon has ______ sides.