Triangles and Polynomials

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Across
  1. 2. Expression involving three terms (6)
  2. 4. Angle that measures 90 degrees (6)
  3. 6. Type of triangle with no sides of equal length (7)
  4. 9. Expression involving variables and coefficients (10)
  5. 10. Polynomial of degree 2 (9)
Down
  1. 1. Process of finding factors of a polynomial (13)
  2. 3. Triangle with two sides of equal length (7)
  3. 5. Sum of which angles of a triangle is 180 (8)
  4. 7. Type of triangle with all sides and angles equal (12)
  5. 8. The longest side of a right-angled triangle (10)