1. Geometry In The Real World By Nick Holt Block 1 A-day 12/11/09

2. Point An undefined term in geometry, it names a location and has no size

3. Line An undefined term in geometry, a line is a straight path that has no thickness and extends forever.

4. Plane An undefined term in geometry, it is a flat surface that has no thickness and extends forever.

5. Angle A figure formed by two rays with a common endpoint.

6. Perpendicular lines Lines that intersect at 90 degree angles.

7. Parallel lines Lines in the same plane that do not intersect.

8. Triangle A three sided polygon.

9. Right Triangle A triangle with one right angle.

10. Pentagon A five-sided polygon.

11. Hexagon A six-sided polygon.

12. Square A quadrilateral with four congruent sides and four right angles.

13. Rectangle A quadrilateral with four right angles.

14. Trapezoid A quadrilateral with exactly one pair of parallel sides.

15. Parallelogram A quadrilateral with two pairs of parallel sides.

16. Circle The set of two points in a plane that are a fixed distance from a given point called the center of the circle.

17. Cylinder A three dimensional figure with two parallel congruent circular bases and a curved lateral surface that connects the bases.

18. Sphere The set of points in space that are a fixed distance from a given point called the center of the sphere.

19. Cube A prism with six square faces

20. Regular pyramid A pyramid whose base is a regular polygon and whose lateral faces are congruent isosceles triangles.

21. Right cone A cone whose axis is perpendicular to the base.