Across
- 4. Lying on the same straight line.
- 6. A flat surface that can extend forever in length and width but has no thickness.
- 7. A closed plane figure bounded by at least three line segments.
- 8. Often referred to as the right cone. A cone is a solid formed by rotating a right triangle around one of its legs.
- 11. A straight line or a plane that divides a line, a plane, an angle, or a shape into two equal parts.
- 12. A general conclusion proposed to be proved upon the basis of certain given hypotheses or assumptions
- 13. The path of a point moving in opposite directions infinitely. A line has neither width nor thickness but length. It is the shortest distance between two points.
- 14. A statement accepted as true without proof.
- 15. The set of all the elements within a particular universal set that are not elements of the given set.
- 16. Part of a line between two points called endpoints.
- 19. A convex curve is a set of points any of whose chords do not include any point that is not in the set.
- 20. Two angles that share the same vertex and have one side in common between them.
- 23. The boundary line of a circle or the length of such a boundary line.
- 24. The length of the boundary around a shape or a figure.
- 26. Two lines that intersect at right angles.
- 29. Points or lines that all lie in the same plane.
- 30. The side opposite the right angle in a right triangle.
- 32. The side facing a given angle in a triangle. It is the side not forming one arm of the angle.
- 36. term A linear system of equations that has fewer equations than variables.
- 37. A planar surface of a solid figure.
- 38. A pair of adjacent angles formed by intersecting lines.
- 41. Two or more straight coplanar lines that do not intersect.
- 42. Also called half-line. It is a straight line that extends from a point.
- 43. A point at which the two rays of an angle meet or the intersection point of two sides of a plane figure. A point shared by three or more sides of a solid figure.
- 44. A closed solid bounded by a surface on which all points are equidistant from a central point called the center.
Down
- 1. They are straight lines that are neither parallel, nor intersecting.
- 2. Two angles that add up to 180°.
- 3. The point on a line segment that divides the given line segment into two congruent parts.
- 4. A can-shaped solid figure.
- 5. It is the angle between two perpendicular lines such as the corner of a square or two perpendicular planes such as the wall and the ground.
- 9. The pair of angles opposite each other formed by two intersecting lines.
- 10. A unit of measure used to measure the magnitude of an angle, equal in magnitude to 1/360 of a complete revolution.
- 17. A line segment where two faces of a polyhedron meet.
- 18. When at least one of the interior angles of a polygon is greater than 180°
- 21. The surface included within a closed figure, measured by the number of square units needed to cover the surface.
- 22. An angle that is between 90° and 180°.
- 23. An additional geometric figure that is constructed to assist in solving a problem or producing a proof.
- 25. A line segment that passes through the center of a circle and has its two endpoints on the circle. A line segment that passes through the center of a sphere and has its two endpoints on the surface of the sphere.
- 27. A polyhedron whose one face is a polygon and the other faces are triangles with one common vertex.
- 28. Planar figures or solid shapes that have the same shape and size.
- 31. A solid bounded by at least four polygonal faces.
- 33. Two things that are located or facing directly across.
- 34. An angle with a measure between 0° and 90°.
- 35. A space figure with two parallel polygonal bases that are the same shape and the same size.
- 39. The distance from the center of a circle to any point on its circumference.
- 40. The two rays are called the sides of the angle and the initial point is called the vertex of the angle.
- 41. A geometric object that has no dimension and is used to indicate a location.
- 45. A set of logical arguments used to deduce or prove a mathematical theorem from a set of axioms.