Planes and Solids

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Across
  1. 1. Solid whose base is a polygon and whose lateral faces are traingles.
  2. 4. Is the figure bounded by two radii and an included arc.
  3. 7. Is a conic with an eccentricity that is less than 1.
  4. 10. Has only one pair of parallel sides.
  5. 11. All interior angle are right angle.
  6. 12. Sum of the lengths of all the sides of the polygon.
  7. 13. It resembles a pyramid but with circular base.
  8. 20. Polygon that has 50 sides.
  9. 22. Special type of a rectangle in which all the sides are equal.
  10. 23. The center mass of the triangle.
  11. 24. Angles formed between two intersecting plane.
  12. 26. Three or more points that lie on the same straight line.
  13. 27. The side perpendicular to the altitude.
  14. 28. Also known as tetragon or quadrangle.
  15. 30. Surfaces on the sides of a polyhedron.
  16. 32. Area of the surface of a three-dimensional figure or solid.
  17. 33. Is a line segment joining any two points on the circle.
  18. 35. Angle formed between two adjacent sides.
  19. 40. The center of the largest circle that can be inscribed in a triangle.
  20. 41. Polygon that has 20 sides.
  21. 42. Line which contains the orthocenter, centroid, and the circumference of the triangle.
Down
  1. 2. The area bounded by any two concentric circles.
  2. 3. Fixed point of the circle.
  3. 5. Does not have any pair of parallel side.
  4. 6. Is a conic section in which the eccentricity is equal to 1.
  5. 8. The area of the lateral or side surfaces of a solid.
  6. 9. Non-convex, self-intersecting polygon that resembles a star.
  7. 13. Perimeter of the circle.
  8. 14. Polygon that has 12 sides.
  9. 15. Bounded by polygons joined at their edges.
  10. 16. Lines that lie in the same plane.
  11. 17. An expression of equality between two ratios.
  12. 18. Polyhedral angle of three faces.
  13. 19. The endpoints of the each side of the polygon.
  14. 21. Region enclosed by an ellipse.
  15. 25. Is a portion of the circle contains two endpoints.
  16. 29. Has two pairs of parallel sides.
  17. 31. Solid in which all points on its surface are equidistant from its center.
  18. 34. A triangle with right angle.
  19. 36. A line in the same plane as the circle.
  20. 37. Parallelogram with equal sides.
  21. 38. Three dimensional figure.
  22. 39. Triangle with no congruent sides and no congruent angles.