Across
- 2. The geometric figure formed at the intersection of two distinct lines.
- 4. The side of a right triangle opposite the right angle.
- 9. Lying on the same line.
- 11. A three dimensional figure with a single base tapering to an apex. The base can be any simple closed curve. Often the word cone refers to a right circular cone.
- 12. A part of a line starting at a particular point and extending infinitely in one direction.
- 15. The result of taking the reciprocal of a number and then changing the sign.
- 18. A pair of numbers that describe the position of a point on a coordinate plane by using the horizontal and vertical distances from the two reference axes.
- 20. sides faces sides
- 22. The geometric figure formed by two points.
- 24. A shape or solid which has an indentation or "cave". Formally, a geometric figure is concave if there is at least one line segmentconnecting interior points which passes outside of the figure.
- 27. Point B is between points A and C if it is on the line segment connecting A and C.
- 28. A method for finding the volume of a solid of revolution
- 30. A line segment between two points on the circle or sphere which passes through the center.
- 31. sides of the shape the sides of the shapes
- 32. Two rays sharing a common endpoint.
- 33. angle 90 degree angle
- 36. The point halfway between two given points.
- 37. The complement of an acute angle A is the angle 90
- 40. length from one side of the circle to center
- 41. two angles that are 140 degrees
- 43. A pair of adjacent angles formed by intersecting lines. Angles 1 and 2 below are a linear pair.
- 45. A line segment, line, or plane that divides a geometric figure into two congruent halves.
- 46. objects are those lying in the same plane.
Down
- 1. point of a geometric figure
- 2. A flat surface extending in all directions.
- 3. A closed plane figure for which all sides are line segments.
- 5. An angle that has measure more than 90° and less than 180°.
- 6. 3D circle
- 7. A solid with no curved surfaces or edges.
- 8. A part of a line starting at a particular point and extending infinitely in one direction.
- 10. An angle that has measure less than 90°.
- 13. A convex curve is a set of points any of whose chords do not include any point that is not in the set.
- 14. a true statement, which does not require to be proved
- 16. angles Two angles in a plane which share a common vertex and a common side but do not overlap. Angles 1 and 2 below are adjacent angles.
- 17. a transparent optical element with flat, polished surfaces
- 19. A unit of angle measure equal to of a complete revolution.
- 21. A complete circular arc. Circumference also means the distance around the the outside of a circle.
- 23. A vertical line has undefined slope because all points on the line have the same x-coordinate
- 24. three-dimensional geometric shape.
- 25. angles are vertical
- 26. Lines in three dimensional space that do not intersect and are not parallel.
- 29. 90 degree angle
- 34. All points between two given points (including the given points themselves).
- 35. a deductive argument for a mathematical statement
- 38. distinct coplanar lines that do not intersect.
- 39. Exactly equal in size and shape. Congruent sides or segments have the exact same length. Congruent angles have the exact same measure. For any set of congruent geometric figures, corresponding sides, angles, faces, etc. are congruent construction To draw shapes
- 42. length around an object
- 44. a base that is a regular polygon