Across
- 4. Point B is in the middle of points A and C if it is on the line segment connecting A and C.
- 5. A closed plane figure bounded by at least three line segments.
- 6. A geometric object that has no dimension and is used to indicate a location.
- 7. A line segment, line, or plane that divides a geometric figure into two congruent halves.
- 8. A statement accepted as true without proof. A postulate should be so simple and direct that it seems to be unquestionably true.
- 13. Two distinct coplanar lines that do not intersect.
- 14. Two lines that intersect at right angles.
- 15. Three terms Point, Line and Plane.
- 18. Lines in three dimensional space that do not intersect and are not parallel.
- 19. Two rays sharing a common endpoint. Angles are typically measured in degrees or radians.
- 21. A line segment between two points on the circle or sphere which passes through the center. The word also also refers to the length of this line segment.
- 22. A set of logical arguments used to deduce or prove a mathematical theorem from a set of axioms.
- 25. Two angles in a plane which share a common vertex and a common side but do not overlap.
- 29. The point on a line segment that divides the given line segment into two congruent parts.
- 31. The pair of angles opposite each other formed by two intersecting lines.
- 33. A planar surface of a solid figure.
- 34. A polyhedron whose one face is a polygon and the other faces are triangles with one common vertex.
- 35. When two lines intersect, four angles are formed. The angles that are directly opposite to each other are called Opposite Angles.
- 37. pair Two angles that are adjace and supplementary.
- 39. The longest side opposite the right angle in a right triangle.
- 40. A solid with parallel congruent bases which are both polygons.
- 41. Is formed by taking two circles (or ellipses), putting one up above the other and wrapping a surface around to connect the edges.
- 43. is officially defined by the two points that it passes through.
- 44. A polygon that has all interior angles less than 180°
- 47. The surface included within a closed figure, measured by the number of square units needed to cover the surface.
Down
- 1. A part of a line starting at a particular point and extending infinitely in one direction.
- 2. Part of a line between two points called endpoints.
- 3. An angle that is between 90° and 180°.
- 9. A three dimensional solid consisting of all points equidistant from a given point.
- 10. A solid bounded by at least four polygonal faces. The pairs of faces meet along their edges. Three or more edges meet in each vertex.
- 11. A complete circular arc. It also means the distance around the the outside of a circle
- 12. Lying on the same line.
- 14. A flat surface that can extend forever in length and width but has no thickness.
- 16. An assertion that can be proved true using the rules of logic.
- 17. A 90° angle.
- 20. Any objects that lie in the same plane.
- 23. An additional geometric figure that is constructed to assist in solving a problem or producing a proof.
- 24. The distance from the center of a circle to any point on its circumference or the distance from the center of a sphere to its surface.
- 26. A shape or solid which has an indentation or "cave”.
- 27. Two rays sharing a common endpoint. Their typically measured in degrees or radians.
- 28. Two angles that add up to 180°.
- 30. On the Cartesian plane are a set of numbers officially called “an ordered pair” that are in the form ( x, y).
- 32. Two acute angles that add up to 90°. For example, 40° and 50°.
- 35. Two rays with a common endpoint that point in opposite directions and form a straight line.
- 36. A straight line along which two faces of a solid meet.
- 38. Exactly equal in size and shape. The sides or segments have the exact same length. The angles have the exact same measure.
- 42. A unit of angle measure equal to of a complete revolution. There are 360 in a circle. They’re indicated by the ° symbol.
- 44. A three dimensional figure with a single base tapering to an apex. The base can be any simple closed curve.
- 45. A point at which the two rays of an angle meet or the intersection point of two sides of a plane figure.
- 46. The distance around the outside of a plane figure.