Interior and Exterior Angles of Polygons

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Across
  1. 2. sum of interior angles is equal to 540 degrees
  2. 4. is made up of 5 triangles
  3. 5. 3 sides
  4. 7. is made up of 8 triangles
Down
  1. 1. 4 sides
  2. 3. sum of interior angles is equal to 1080 degrees
  3. 6. is made up of 7 triangles