Unit 6 Vocabulary Words

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Across
  1. 4. of a triangle the perpendicular drawn from the vertex of the triangle to the opposite side.
  2. 5. of Pythagorean theorem in ΔABC, if c2=a2+b2 then ∠C is a right triangle, ΔPQR being the right angle.
  3. 8. root any number that can be multiplied by itself three times to equal a cube
  4. 10. the distance from the center of the circle to any point on it's circumference
  5. 14. triples a2+b2 = c2 where a, b and c are the three positive integers.
  6. 15. plane a two-dimensional plane formed by the intersection of two number lines.
  7. 16. a solid geometric figure with straight parallel sides and a circular or oval cross-section
  8. 17. of solids the length of a perpendicular from the base to the point or points most distant from it
  9. 19. a book forming part of a work or series.
  10. 20. a real number that cannot be expressed as a ratio of integers
  11. 22. a distinctive three-dimensional geometric figure with a flat and curved surface pointed towards the top.
  12. 23. of a triangle the two sides that intersect to determine the right angle
  13. 24. theorem a²+b²=c²
Down
  1. 1. the longest side of a right triangle, opposite the right angle.
  2. 2. a straight line passing from side to side through the center of a body or figure, especially a circle or sphere.
  3. 3. reasoning a logical approach where you progress from general ideas to specific conclusions.
  4. 6. root the number that, when multiplied by itself, gives the original number.
  5. 7. number 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
  6. 9. is the side of a polygon or the face of a polyhedron.
  7. 11. a round solid figure, or its surface, with every point on its surface equidistant from its center.
  8. 12. point of a plane a graphing and description system for points and lines
  9. 13. solid A geometric figure or shape that has a three-dimensional structure I
  10. 18. The √ symbol that is used to denote square root or nth roots.
  11. 21. triangle has one angle that is 90 degrees. The other two angles always add up to 90 degrees but can be different sizes.