Across
- 3. a general conclusion that has been proved
- 5. A line segment between two points on the circle or sphere which passes through the center.
- 10. An angle that is between 90° and 180°.
- 12. A solid bounded by at least four polygonal faces
- 15. does not require to be proved.
- 18. A planar surface of a solid figure.
- 19. A complete circular arc. collinear Lying on the same line.
- 20. 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.
- 23. The surface included within a closed figure, measured by the number of square units needed to cover the surface.
- 26. A flat surface that can extend forever in length and width but has no thickness.
- 27. A space figure with two parallel polygonal bases that are the same shape and the same size.
- 29. all its edges "point outwards"
- 30. Two angles in a plane which share a common vertex and a common side but do not overlap.
- 33. A geometric object that has no dimension and is used to indicate a location.
- 34. Point B is between points A and C if it is on the line segment connecting A and C.
- 35. the length of the boundary around a shape or a figure.
- 37. Two lines that intersect at right angles
- 39. A perfect round ball
- 40. A three-dimensional geometric figure with parallel congruent bases
- 41. A point at which the two rays of an angle meet or the intersection point of two sides of a plane figure.
- 42. a term that is not defined
- 43. To draw a figure, usually under certain specific restrictions such as using only a straightedge and compasses
Down
- 1. An angle that measures 90°
- 2. The point on a line segment that divides the given line segment into two congruent parts.
- 4. Points or lines that all lie in the same plane.
- 6. Two acute angles that add up to 90°
- 7. Also called half-line. It is a straight line that extends from a point
- 8. Two angles that are adjacent and supplementary
- 9. A polygon that has one or more interior angles greater than 180°
- 11. The pair of angles opposite each other formed by two intersecting lines.
- 12. A set of logical arguments used to deduce or prove a mathematical theorem from a set of axioms.
- 13. Part of a line between two points called endpoints.
- 14. A line segment, line, or plane that divides a geometric figure into two congruent halves.
- 16. A line segment where two faces of a polyhedron meet.
- 17. The side opposite the right angle in a right triangle.
- 21. A unit of measure used to measure the magnitude of an angle, equal in magnitude to 1/360 of a complete revolution.
- 22. 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.
- 24. When two lines intersect, four angles are formed.
- 25. two rays with a common endpoint that point in opposite directions and form a straight line.
- 28. Two or more straight coplanar lines that do not intersect.
- 29. Exactly equal in size and shape
- 30. Two rays sharing a common endpoint.acuteangle An angle that has measure less than 90°.
- 31. A three dimensional figure with a single base tapering to an apex
- 32. A polyhedron whose one face is a polygon and the other faces are triangles with one common vertex
- 36. two angles that add up to 180°.
- 37. A closed plane figure bounded by at least three line segments.
- 38. The distance from the center of a circle to any point on its circumference.
- 44. They lie in different planes.