Across
- 2. Two or more straight coplanar lines that do not intersect.
- 8. The surface included within a closed figure, measured by the number of square units needed to cover the surface.
- 10. A polyhedron whose one face is a polygon and the other faces are triangles with one common vertex.
- 11. Lying on the same straight line.
- 12. 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.
- 13. 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.
- 15. Having one thing on either side of it. 2 is between 1 and 3.
- 16. Points or lines that all lie in the same plane.
- 18. An additional geometric figure that is constructed to assist in solving a problem or producing a proof.
- 20. Two lines that intersect at right angles.
- 22. 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. A diagonal of a polyhedron is a line segment joining two vertices that are not in the same face.
- 23. A set of logical arguments used to deduce or prove a mathematical theorem from a set of axioms.
- 27. Two angles that are adjacent and supplementary.
- 28. The length of the boundary around a shape or a figure.
- 29. Often referred to as the right cone. A cone is a solid formed by rotating a right triangle around one of its legs.
- 32. 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.
- 35. The distance from the center of a circle to any point on its circumference.
- 36. The pair of angles opposite each other formed by two intersecting lines.
- 40. An angle that is between 90° and 180°.
- 42. A geometric object that has no dimension and is used to indicate a location.
- 43. A line segment where two faces of a polyhedron meet.
- 44. a true statement, which does not require to be proved.
- 45. An angle with a measure between 0° and 90
Down
- 1. The point on a line segment that divides the given line segment into two congruent parts.
- 3. Part of a line between two points called endpoints.
- 4. A can-shaped solid figure.
- 5. A unit of measure used to measure the magnitude of an angle, equal in magnitude to 1/360 of a complete revolution.
- 6. A variable whose value is found by solving an equation.
- 7. A general conclusion proposed to be proved upon the basis of certain given hypotheses or assumptions; or, a general conclusion that has been proved,
- 9. A space figure with two parallel polygonal bases that are the same shape and the same size.
- 14. A planar surface of a solid figure.The following figure has 5 faces.
- 16. Planar figures or solid shapes that have the same shape and size.
- 17. A closed plane figure bounded by at least three line segments.
- 18. The boundary line of a circle or the length of such a boundary line.
- 19. a pair of angles that are vertical
- 20. A flat surface that can extend forever in length and width but has no thickness. The surface of a calm sea and a flat valley are all physical models of a plane.
- 21. Intuitively speaking, curved outward or toward the eye. A convex curve is a set of points any of whose chords do not include any point that is not in the set.
- 24. angle An angle that measures 90° or /2 radians. 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.
- 25. The units, the radian (for measuring a plane angle) and the steradian (for measuring a solid angle), used along with base units to define derived units.
- 26. Two angles that share the same vertex and have one side in common between them.
- 30. The figure formed by two rays from the same initial point. The two rays are called the sides of the angle and the initial point is called the vertex of the angle. The symbol for angle is .
- 31. The side opposite the right angle in a right triangle.
- 33. wo rays with a common endpoint that form a line
- 34. A straight line or a plane that divides a line, a plane, an angle, or a shape into two equal parts.
- 36. A point at which the two rays of an angle meet or the intersection point of two sides of a plane figure.
- 37. Also called half-line. It is a straight line that extends from a point.
- 38. A pair of angles that add up to 90°.
- 39. 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.
- 41. Also called non-coplanar lines. They are straight lines that are neither parallel, nor intersecting. They lie in different planes.
- 46. 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.