7th Mcintire

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Across
  1. 2. A closed plane figure bounded by at least three line segments.
  2. 4. 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.
  3. 7. A can-shaped solid figure.
  4. 9. Also called half-line. It is a straight line that extends from a point.
  5. 11. Two angles that are adjacent (share a leg) and supplementary (add up to 180°)
  6. 13. Two rays with a common endpoint that point in opposite directions and form a straight line A line that is not bent or curved.
  7. 15. A pair of angles that add up to 90°.
  8. 16. 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.
  9. 18. Having one thing on either side of it. 2 is between 1 and 3.
  10. 19. Part of a line between two points called endpoints.
  11. 20. A straight line or a plane that divides a line, a plane, an angle, or a shape into two equal parts.
  12. 23. Two angles that share the same vertex and have one side in common between them.
  13. 25. A unit of measure used to measure the magnitude of an angle, equal in magnitude to 1/360 of a complete revolution.
  14. 26. A general conclusion proposed to be proved upon the basis of certain given hypotheses or assumptions
  15. 27. The boundary line of a circle or the length of such a boundary line.
  16. 29. The point on a line segment that divides the given line segment into two congruent parts.
  17. 32. Points or lines that all lie in the same plane.
  18. 33. An angle that is between 90° and 180°.
  19. 35. A point at which the two rays of an angle meet or the intersection point of two sides of a plane figure.
  20. 36. The distance from the center of a circle to any point on its circumference.
  21. 37. A set of logical arguments used to deduce or prove a mathematical theorem from a set of axioms.
  22. 40. the angles opposite each other when two lines cross
  23. 41. A line segment where two faces of a polyhedron meet.
  24. 42. 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.
  25. 43. Often referred to as the right cone. A cone is a solid formed by rotating a right triangle around one of its legs.
  26. 45. An additional geometric figure that is constructed to assist in solving a problem or producing a proof.
  27. 49. A statement accepted as true without proof
Down
  1. 1. Lying on the same straight line.
  2. 3. 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.
  3. 5. An angle with a measure between 0° and 90°.
  4. 6. The length of the boundary around a shape or a figure.
  5. 8. The pair of angles opposite each other formed by two intersecting lines.angle 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.
  6. 10. Two angles that add up to 180°.
  7. 12. A geometric object that has no dimension and is used to indicate a location.
  8. 14. unknown answer
  9. 17. Two lines that intersect at right angles.
  10. 21. 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.
  11. 22. The side opposite the right angle in a right triangle.
  12. 24. When at least one of the interior angles of a polygon is greater than 180°,
  13. 28. A geometric figure with no indentations.
  14. 30. Two or more straight coplanar lines that do not intersect.
  15. 31. Planar figures or solid shapes that have the same shape and size.
  16. 34. The figure formed by two rays from the same initial point.
  17. 37. A space figure with two parallel polygonal bases that are the same shape and the same size.
  18. 38. A polyhedron whose one face is a polygon and the other faces are triangles with one common vertex.
  19. 39. 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.
  20. 44. 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.
  21. 46. Also called non-coplanar lines. They are straight lines that are neither parallel, nor intersecting. They lie in different planes.
  22. 47. The surface included within a closed figure, measured by the number of square units needed to cover the surface.
  23. 48. A planar surface of a solid figure.