maths r h4rd #skibooty still water

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Across
  1. 2. a 2-d shape with at least 3 sides no curved lines and is closed
  2. 7. a triangle that has 2 of the same length sides
  3. 8. the outside lines of a shape
Down
  1. 1. two lines that have 4 right angles
  2. 2. a 3-d shape made up of 4 triangles
  3. 3. a 3-d "triangle" that has 3 rectangles and 2 triangles
  4. 4. the inside of a shape
  5. 5. the series of places to locate a specific point
  6. 6. an unfolded 3-d shape