Lesson 1:triangles

Edit Answers
1234567891011121314
Across
  1. 3. when points are on the same plane
  2. 4. triangle in which one of the angles are obtuse
  3. 7. triangle in which all angles are congruent
  4. 11. triangle with at least two congruent sides
  5. 13. a triangle with no congruent side
  6. 14. triangle in which one of the angles is a right angle
Down
  1. 1. a closed figure such that the union of three or more coplanar segments,whic intersect at endpoints, with each endpoint shared by exactly two noncollinear segments
  2. 2. a union of two noncollinear rays with a commom endpoint
  3. 3. a polygon if and only if the lines containing the sides of the polygon do not contain points in its interior
  4. 5. terms also called the primitive terms
  5. 6. triangle with all side congruent
  6. 8. angles share a common vertex and a common side but do not overlap
  7. 9. a part of a line that has one endpoint and goes on infinitely in one direction
  8. 10. system is a logical system which possesses an explicity stated set of axioms from which theorem can derived
  9. 12. triangle in which all angles are acute