Math Crossword

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Across
  1. 2. A polygon with the least number of sides possible
  2. 4. An algebraic expression with one term
  3. 6. π is the ratio of Circumference and ______
  4. 9. The highest power of variable in an algebraic expression is known as its ______
  5. 10. 1 is the ______ identity
Down
  1. 1. Proven statement used for proving another statement
  2. 3. The branch of mathematics that deals with shapes and their properties
  3. 5. When sum of 2 angles is 180°, they are called
  4. 7. 0 is the ______identity
  5. 8. 180°<x<360°. What angle is x