CC3 Chapter 9 Vocabulary

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Across
  1. 7. the two sides of a right triangle that form right angles
  2. 8. 2 angles whose measures add up to 90 degrees
  3. 13. two or more straight lines on a flat surface that do not intersect
  4. 14. relating the lengths of the legs of a right triangle to the length of the hypotenuse
  5. 16. a line that intersects two or more other lines on a flat surface
  6. 20. two angles not adjacent to the exterior angle in a triangle with an exterior angle
  7. 22. angles between a pair of lines that switch sides of a third intersecting line
  8. 23. 2 opposite angles formed by 2 intersecting lines
  9. 24. when a side of a triangle is extended to form an angle outside the triangle
Down
  1. 1. any angle that measures between 90 and 180 degrees
  2. 2. the longest side of a right triangle
  3. 3. a number "a" is a square root of b if a^2=b
  4. 4. angles on the same side of two lines and on the same side of the transversal
  5. 5. a triangle with all three angle measures less than 90 degrees
  6. 6. an angle that measures 180 degrees
  7. 9. to multiply a number by itself
  8. 10. two angles a and b for which a+b=180 degrees
  9. 11. the number that is the product of an integer and itself
  10. 12. two lines that meet to form a right angle
  11. 15. if 2 corresponding angles of 2 triangles are congruent, then the 2 triangles are similar
  12. 17. a point where 2 or more line segments meet to form a "corner"
  13. 18. an angle that measures 90 degrees
  14. 19. two angles with a common side; common vertex; and no interior points in common
  15. 21. an expression in the form a`sa, where a`sa is the positive square root of "a"