Congruent Triangles

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Across
  1. 1. a triangle with one right angle
  2. 4. an operation that moves or changes a geometric figure in some way to produce a new figure
  3. 11. a triangle with three congruent sides
  4. 12. a statement that can be proved easily using a theorem
  5. 14. two geometric figures that have exactly the same size and shape
  6. 16. a transformation that moves every point of a figure the same distance in the same direction
Down
  1. 2. a triangle with three acute angles
  2. 3. in a right triangle, the side opposite of the right angle
  3. 5. a triangle with at least two congruent sides
  4. 6. a triangle with three congruent angles
  5. 7. a triangle with no congruent sides
  6. 8. when the sides of a triangle are extended, the angles that are adjacent to the interior angles
  7. 9. a transformation in which a figure is turned about a fixed point called the center of rotation
  8. 10. a pair of sides or angles that have the same relative position in two congruent or similar figures
  9. 13. when the sides of a triangle are extended, the three original angles of the triangle
  10. 15. a triangle with one obtuse angle
  11. 17. a transformation that uses a line of reflection to create a mirror image of the original figure