Geometry Crossword Puzzle

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Across
  1. 3. a triangle with two sides the same length
  2. 5. a four-sided polygon that has four right angles and each pair of opposite sides parallel and of the same length
  3. 6. the measure of the distance around a two-dimensional figure
  4. 7. a rule containing variables that represents a mathematical relationship (example: A=ℓw)
  5. 9. an angle that measures 90º
  6. 10. lines that meet at right angles
Down
  1. 1. a corner of a polygon
  2. 2. a polygon that has all of its sides equal and all of its angles equal
  3. 4. a triangle with no sides equal
  4. 8. the number of square units inside a figure or shape