the language of geometry

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Across
  1. 3. One angle is larger than 90°
  2. 5. lines vertical or horizontal to each other
  3. 6. a collection of points along a straight path that goes on and on in opposite directions
  4. 7. No sides are congruent
  5. 9. a polygon with three edges and three vertices.
  6. 12. Is the part of an if-then statement (conditional) that follows then
  7. 13. A statement that is mathematically proven to be true for all cases.
  8. 14. formed by rays with a common endpoint
  9. 19. Points on the same line
  10. 20. A four sided flat shape with straight sides where all interior angles are right angles 90° also opposite sides are parallel and of equal length
  11. 21. the part that follows if in an if then statement.
  12. 23. polygon with eight sides and a 135° interior angle
  13. 24. A four sided flat shape with straight sides where opposite sides are parallel opposite sides are equal in length and a and b are same
  14. 25. undefined flat surface
  15. 26. The side opposite the right angle in a right triangle
  16. 27. A four sided flat shape with straight sides that have two pairs of sides each pair is made of two adjacent sides that are equal in length
Down
  1. 1. A four sided flat shape with straight sides where all sides have equal length. Also opposite sides are parallel and opposite angles are equal
  2. 2. Figures in the same plane
  3. 4. formed by two rays with the same endpoint
  4. 5. Four sided flat shape with straight sides where are all sides have equal length and every interior angle is a right angle 90°
  5. 8. A conclusion reached by using inductive reasoning
  6. 10. All angles are less than 90°
  7. 11. Adds to 90°
  8. 15. A line that intersect 2 or more lines in a plane
  9. 16. A line, ray or segment from a vertex to the midpoint of the side of the triangle opposite of that vertex
  10. 17. The part of a line consisting of one endpoint and all the points of the line on one side of the endpoint
  11. 18. polygon with 6 sides and a 120° interior angle
  12. 22. A four sided flat shape with straight sides that have pairs of opposite sides parallel the sides are parallel are called bases. That other sides are legs