Math crossword

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Across
  1. 2. the perpendicular drawn from the vertex of the triangle to the opposite side.
  2. 4. a side of a polygon or a face of a polyhedron, particularly one oriented perpendicular to the direction in which height is measured, or on what is considered to be the "bottom" of the figure.
  3. 6. the longest side of a right triangle, opposite the right angle.
  4. 7. the length of a perpendicular from the base to the point or points most distant from it.
  5. 10. a round solid figure, or its surface, with every point on its surface equidistant from its center.
  6. 11. The √ symbol that is used to denote square root or nth roots
  7. 13. the amount of space in a certain 3D object.
  8. 14. any number multiplied by itself three times to get a cube.
  9. 15. a line segment extending from the center of a circle or sphere to the circumference or bounding surface.
  10. 16. A triangle in which one of the interior angles is 90°
  11. 19. the well-known geometric theorem that the sum of the squares on the legs of a right triangle is equal to the square on the hypotenuse
  12. 20. any number that can be written as a fraction, where both the numerator (the top number) and the denominator (the bottom number) are integers, and the denominator is not equal to zero.
  13. 21. a distinctive three-dimensional geometric figure with a flat and curved surface pointed towards the top.
  14. 22. a solid geometric figure with straight parallel sides and a circular or oval cross section.
  15. 24. If the square of the length of the longest side of a triangle is equal to the sum of the squares of the other two sides, then the triangle is a right triangle.
Down
  1. 1. A straight line segment that passes through the center of a circle or sphere from one side to the other.
  2. 3. consists of three positive integers a, b, and c, such that a2 + b2 = c2
  3. 5. A geometric figure or shape that has a three-dimensional structure
  4. 8. the value, which gives the number when it is multiplied by itself.
  5. 9. the two sides that intersect to determine the right angle.
  6. 12. a two-dimensional plane formed by the intersection of two number lines
  7. 17. a real number that cannot be expressed as a ratio of integers
  8. 18. a graphing and description system for points and lines.
  9. 23. a logical process in which a conclusion is based on the concordance of multiple premises that are generally assumed to be true.