1. 4. a point on one end, and it extends infinitely in the other direction.
  2. 5. Bisector- a ray that cuts the angle exactly in half, making two equal angles.
  3. 10. diagram- uses circles to represent relationships among sets of objects
  4. 11. a right triangle is the side of the triangle that is opposite to the right angle.
  5. 15. triangle- a triangle with all three sides unequal.
  6. 16. a cube has six
  7. 17. a segment connecting any vertex of a triangle to the midpoint of the opposite side.
  8. 18. the point where two sides of a polygon meet.
  9. 19. lines- two lines in the same plane that never intersect.
  1. 1. Triangle- a triangle with all three angles less than 90
  2. 2. is a polygon with exactly four sides.
  3. 3. is a segment that passes through the center and has its endpoints on the circle.
  4. 6. segment- s the portion of a line lying strictly between two points. It has a finite length and no width.
  5. 7. corresponding lengths are the same, and if all corresponding angles have the same measure.
  6. 8. theorem- states that if you have a right triangle, then the square built on the hypotenuse is equal to the sum of the squares built on the other two sides. a2 + b2 = c2.
  7. 9. a quadrilateral that has one pair of opposite sides that are parallel.
  8. 12. triangle-is a triangle with three equal sides.
  9. 13. a regular quadrilateral.
  10. 14. Angle- an angle with its vertex at the center of a circle.
  11. 20. has only one dimension