PETA #4

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Across
  1. 2. point
  2. 3. Point at which the two legs of an isosceles
  3. 5. denotes a position in space and has no dimension, represented by a fine dot.
  4. 8. is a flat surface that has no thickness, and it will extend infinitely in every direction.
  5. 9. figure formed by two rays meeting at a common
  6. 14. is a set of axioms, from which some or
  7. 15. as a stepping stone to a larger result
  8. 16. the two angles that have the base as a side
Down
  1. 1. The angle formed by the legs
  2. 4. statement proven based on axioms
  3. 6. theorem that is usually considered an easy
  4. 7. The side opposite of the vertex angle
  5. 9. of it can be used to logically derive or prove a
  6. 10. generally minor, proven proposition which is
  7. 11. meet
  8. 12. statement that is taken to be true
  9. 13. The congruent sides of an isosceles triangle