Geometry
Across
- 1. two lines that intersect to form right angles
- 2. Two or more lines that intersect at only one point
- 5. part of a line that consists of one endpoint and all the points of the line one side of the endpoint
- 7. the endpoint is the __________ of the angle
- 8. An angle that is between 90° and 180°
- 9. geometrical tool used to draw circles and parts of circles called arcs
- 10. ruler with no markings on it
- 12. A set of points that lie in a straight line
- 13. indicates a location and has no size
- 15. segment is a line, ray, or segment that is perpendicular to the segment at its midpoint
- 20. unit of angle measurements equal to 1 over 360
- 21. flat surface that extends without end and has no thickness
- 22. a 180 degree angle
- 24. segment is a point that divides the segment into two congruent segments
- 25. part of a line that consists of two endpoints and all points between them
- 26. straight path that extends in two opposite directions without end and has no thickness
- 27. formed by two rays with the same endpoint
- 28. two rays that share the same endpoint and form a line
- 31. A polygon that has one or more interior angles greater than 180°
Down
- 1. A line is perpendicular to another if it meets or crosses it at right angles (90°)
- 3. Two objects are __________ if they both lie in the same plane
- 4. an instrument having a graduated arc for plotting or measuring angles
- 6. the real number that corresponds with the point two segments that have the same length
- 11. number of square units enclosed in a ploygon
- 14. the point, line, ray, or segment
- 16. A polygon that has all interior angles less than 180°
- 17. an angle that measure 90 degrees
- 18. set of points the figures have in common
- 19. sum of the lengths of a polygons side
- 23. a straight strip or cylinder of plastic, wood, metal, or other rigid material, typically marked at regular intervals, to draw straight lines or measure distances
- 29. an accepted state or fact
- 30. ordered set of numbers that define the position of a point
- 32. An angle with a measure between 0° and 90°