Across
- 3. A can-shaped solid figure.
- 4. Also called non-coplanar lines. They are straight lines that are neither parallel, nor intersecting. They lie in different planes.
- 5. polygon When at least one of the interior angles of a polygon is greater than 180°, it is a concave polygon. The inside surface of a bowl is concave when viewed from above.
- 6. 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.
- 9. A polyhedron with two parallel, congruent polygons being its bases and all the other faces being parallelograms.
- 12. Also called half-line. It is a straight line that extends from a point.
- 15. A unit of measure used to measure the magnitude of an angle, equal in magnitude to 1/360 of a complete revolution.
- 17. Two or more straight coplanar lines that do not intersect.
- 18. A plane figure bounded by three or more straight-line sides
- 19. The boundary line of a circle or the length of such a boundary line.
- 24. The outside of a circle or an ellipse is the convex side; so is the outer surface of a sphere.
- 27. a flat surface that extends indefinitely
- 28. A solid figure with one face a polygon (the base) and the other faces being triangles that all share the same vertex.
- 30. Two angles that add up to 180°.
- 34. The pair of angles opposite each other formed by two intersecting lines.
- 36. Having one thing on either side of it.
- 37. An additional geometric figure that is constructed to assist in solving a problem or producing a proof.
- 39. Part of a line between two points called endpoints.
- 41. The distance from the center of a circle to any point on its circumference.
- 42. Lying on the same straight line.
- 43. A line segment that passes through the center of a circle and has its two endpoints on the circle. It also represents the length of such a line segment.
- 45. Often referred to as the right cone. A cone is a solid formed by rotating a right triangle around one of its legs.
- 46. A pair of adjacent angles formed by intersecting lines
- 49. A planar surface of a solid figure.
Down
- 1. A straight line or a plane that divides a line, a plane, an angle, or a shape into two equal parts.
- 2. The longest side opposite the right angle in a right triangle
- 7. An angle that is between 90° and 180°.
- 8. A perfect round ball. A sphere is a closed solid bounded by a surface on which all points are equidistant from a central point called the center.
- 10. Two rays sharing a common endpoint. Angles are typically measured in degrees or radians.
- 11. 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.
- 13. Two things that are located or facing directly across from each other
- 14. A set of logical arguments used to deduce or prove a mathematical theorem from a set of axioms.
- 16. A three-dimensional figure bounded by plane polygonal faces.
- 20. Points or lines that all lie in the same plane.
- 21. The point on a line segment that divides the given line segment into two congruent parts.
- 22. The length of the boundary around a shape or a figure.
- 23. Often referred to as the right cone. A cone is a solid formed by rotating a right triangle around one of its legs.
- 25. One of the two pairs of equal angles formed when two straight lines intersect each other.
- 26. An initial proposition or statement that is generally accepted as true without proof
- 29. An angle that measures 90°
- 31. The path of a point moving in opposite directions infinitely
- 32. Two rays sharing a common endpoint. Angles are typically measured in degrees or radians.
- 33. If the denominator of a fraction is 0, then the fraction is undefined.
- 35. If the sum of the measures of two angles is 90°.
- 38. A general conclusion proposed to be proved upon the basis of certain given hypotheses or assumptions
- 40. A point shared by three or more sides of a solid figure.
- 44. The surface included within or needed to cover the surface.
- 47. A straight line along which two faces of a solid meet.
- 48. A geometric object that has no dimension and is used to indicate a location.