Geometry Semester 1

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Across
  1. 5. A triangle whose sides are all congruent.
  2. 6. A triangle with one angle bigger than 90 degrees.
  3. 9. Two angles whose sum is 180.
  4. 10. Two angles across from each other when two lines cross, always congruent.
  5. 12. A comparison of two numbers, usually written as a fraction.
  6. 14. The intersection of perpendicular bisectors in a triangle.
  7. 16. To cut an angle or segment in half.
  8. 19. Using measurements of surrounding objects and proportions to find missing measurements is called ____ measurement.
  9. 20. The side across from the right angle in a triangle.
  10. 21. Two lines that intersect at a 90 degree angle are ___.
  11. 22. Same shape, different sizes.
  12. 23. The middle of an angle, where the two rays meet.
Down
  1. 1. Two segments that are the same length are ___.
  2. 2. In similar shapes, their corresponding angles are congruent and their corresponding sides are ___.
  3. 3. A triangle with no sides congruent.
  4. 4. The first step in a proof, the information directly written in the problem.
  5. 7. A transformation that produces an image that is the same shape but a different size.
  6. 8. The ___ theorem can be used to find a missing length of a right triangle.
  7. 11. An angle that is exactly 90 degrees is a ___ angle.
  8. 13. Part of a line with two endpoints.
  9. 15. A triangle with two sides congruent.
  10. 17. Connects a vertex of a triangle to the opposite midpoint, intersects at the centroid.
  11. 18. A point in the middle of a segment.