5th Period Creamer

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Across
  1. 2. A perfect round ball. A closed solid bounded by a surface on which all points are equidistant from a central point called the center.
  2. 4. The boundary line of a circle or the length of such a boundary line.
  3. 6. Concepts that are not defined in terms of previously defined concepts
  4. 8. A can-shaped solid figure.
  5. 9. A statement accepted as true without proof. It should be so simple and direct that it seems to be unquestionably true.
  6. 11. A set of logical arguments used to deduce or prove a mathematical theorem from a set of axioms.
  7. 12. An angle that is greater than 180°.
  8. 13. 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.
  9. 15. Two angles that share the same vertex and have one side in common between them.
  10. 16. Is a solid formed by rotating a right triangle around one of its legs.
  11. 17. The pair of angles opposite each other formed by two intersecting lines.
  12. 22. 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.
  13. 24. Lying on the same straight line.
  14. 25. An angle with a measure between 0° and 90°.
  15. 27. Collinear rays with the same endpoint. They form a line.
  16. 30. When the sum of two angles measures 90°
  17. 31. A point B that lies on the line connecting two points A and C and has one of the two points on each side of it. The point B is said to be between points A and C if, and only if, AB + BC = AC, in which AB is the distance from A to B, BC is the distance from B to C, and AC is the distance from A to C.
  18. 32. Also called half-line. It is a straight line that extends from a point.
  19. 37. A straight line or a plane that divides a line, a plane, an angle, or a shape into two equal parts.
  20. 40. An angle that is between 90° and 180°.
  21. 42. A unit of measure used to measure the magnitude of an angle, equal in magnitude to 1/360 of a complete revolution.
  22. 43. Part of a line between two points called endpoints.
  23. 44. 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.
  24. 45. A planar surface of a solid figure.
  25. 46. The length of the boundary around a shape or a figure.
Down
  1. 1. Two distinct coplanar lines that do not intersect
  2. 3. 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 it is a line segment joining two vertices that are not in the same face.
  3. 4. Points or lines that all lie in the same plane.
  4. 5. A polygon that has at least one diagonal with points outside the polygon.
  5. 7. The point on a line segment that divides the given line segment into two congruent parts.
  6. 9. A space figure with two parallel polygonal bases that are the same shape and the same size.
  7. 10. At a 90° angle.
  8. 14. The side opposite the right angle in a right triangle.
  9. 16. Planar figures or solid shapes that have the same shape and size.
  10. 18. A line segment where two faces of a polyhedron meet.
  11. 19. The path of a point moving in opposite directions infinitely. It has neither width nor thickness but length. It is the shortest distance between two points.
  12. 20. Two angles that add up to 180°.
  13. 21. The figure formed by two rays from the same initial point. The two rays are called the sides of it and the initial point is called the vertex of it.
  14. 23. A polygon that has no diagonal with points outside the polygon
  15. 26. A pair of numbers that describe the position of a point on a plane by using the horizontal and vertical distances from the two reference axes.
  16. 28. A geometric object that has no dimension and is used to indicate a location.
  17. 29. Lines in three dimensional space that do not intersect and are not parallel.
  18. 30. An additional geometric figure that is constructed to assist in solving a problem or producing a proof.
  19. 33. The surface included within a closed figure, measured by the number of square units needed to cover the surface.
  20. 34. A polyhedron whose one face is a polygon and the other faces are triangles with one common vertex.
  21. 35. A closed plane figure bounded by at least three line segments.
  22. 36. A pair of adjacent angles formed by intersecting lines.
  23. 38. A general conclusion proposed to be proved upon the basis of certain given hypotheses or assumptions; or, a general conclusion that has been proved.
  24. 39. A line segment between the center and a point on the circle or sphere.
  25. 41. The corners of a polygon.