Across
- 2. Points or lines that all lie in the same plane.
- 5. A set of numerical values that define the position of a point.
- 6. The longest side opposite the right angle in a right triangle.
- 7. Part of a line between two points called endpoints.
- 11. A solid bounded by at least four polygonal faces.
- 12. Assist in solving a problem or producing a proof.
- 13. A general conclusion proposed to be proved upon the basis of certain given hypotheses or assumptions
- 14. 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.
- 16. The length of the boundary around a shape or a figure.
- 18. A line segment that passes through the center of a circle and has its two endpoints on the circle.
- 19. The pair of angles opposite each other formed by two intersecting lines.
- 21. If the sum of the measures of two angles is 90°.
- 23. A polyhedron with two parallel, congruent polygons being its bases and all the other faces being parallelograms.
- 24. The surface included within a closed figure, measured by the number of square units needed to cover the surface.
- 25. Intuitively speaking, curved away from the eye. A concave figure is a set of points some of whose chords include points that are in the set.
- 29. Lying on the same straight line.
- 31. Also called half-line. It is a straight line that extends from a point.
- 32. Two lines that intersect at right angles.
- 38. An angle with a measure between 0° and 90°.
- 39. A point at which the two rays of an angle meet or the intersection point of two sides of a plane figure.
- 41. Intuitively speaking, curved outward or toward the eye.
- 44. Having one thing on either side of it.
- 46. A straight line along which two faces of a solid meet.
- 47. A tubular solid with a circular base.
Down
- 1. A set of logical arguments used to deduce or prove a mathematical theorem from a set of axioms.
- 3. An initial proposition or statement that is generally accepted as true without proof (self-evident truth) and from which further statements, or theorems, can be derived by using logical deduction.
- 4. A primitive notion is not defined in terms of previously defined concepts, but is only motivated informally, usually by an appeal to intuition and everyday experience.
- 8. Two angles that add up to 180°.
- 9. A straight line or a plane that divides a line, a plane, an angle, or a shape into two equal parts.
- 10. In plane geometry, when one figure fits exactly on top of the other through simple translation and/or rotation.
- 15. Two angles that share the same vertex and have one side in common between them.
- 16. A plane figure bounded by three or more straight-line sides.
- 17. The point on a line segment that divides the given line segment into two congruent parts.
- 20. A perfect round ball.
- 22. The figure formed by two rays from the same initial point.
- 23. A flat surface that can extend forever in length and width but has no thickness.
- 26. A pair of angles is said to be vertical
- 27. The boundary line of a circle or the length of such a boundary line.
- 28. Two or more straight coplanar lines that do not intersect.
- 30. An angle that measures 90°
- 32. Where curves or curved surfaces touch.
- 33. The highest power of the variable in a polynomial.
- 34. Solid formed by rotating a right triangle around one of its legs.
- 35. pair Pair of adjacent angles that form a straight line.
- 36. The distance from the center of a circle to any point on its circumference.
- 37. A planar surface of a solid figure.
- 40. A solid figure with one face a polygon (the base) and the other faces being triangles that all share the same vertex.
- 42. Two rays with a common endpoint that form a line
- 43. An angle that is between 90° and 180°.
- 45. They are straight lines that are neither parallel, nor intersecting.