Geometry

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Across
  1. 7. 4-sided polygon that has interior angles that measure less than 180° each.
  2. 9. A suggestion or assumption as a basis for reasoning or belief.
  3. 13. The longest side of a right angle, opposite the right angle itself.
  4. 15. A plane figure with 9 sides and 9 angles.
  5. 17. The point where 3 altitudes of a triangle meet.
  6. 18. A plane figure with at least 3 straight sides and angles.
  7. 19. The center of the incircle of a triangle.
  8. 21. A line joining two opposite corners of a shape.
  9. 25. A line that bisects another line segment at a right angle, through the intersection point.
  10. 29. A triangle whose all 3 sides have different lengths, and all 3 angles have different measurements.
  11. 30. The angles between adjacent sides of a shape or lines.
  12. 31. Lines, planes, or surfaces side by side and having the same distance continuously between them.
  13. 33. A shape with 4 sides and 4 right angles, parallel and congruent opposite sides.
  14. 35. A mathematical expression in which the sides are not equal to each other.
  15. 36. The forums that calculates the distance of one point to another.
  16. 39. Instead of showing that the conclusion to be proved is true, you show that all of the alternatives are false.
  17. 41. The angle that is furthest away from another in an angle.
  18. 42. Identical figures in both shape and size.
  19. 43. A quadrilateral which has one of its interior angles greater than 180°.
Down
  1. 1. Parallel to the plane of a horizon.
  2. 2. Center of a triangles circumference.
  3. 3. A pentagon in which all the sides are equal in length, and all the angles are of equal measures.
  4. 4. A triangle with two equal sides, and the both angles on the base are congruent.
  5. 5. At equal distances.
  6. 6. Point at which two lines or segments meet and create a point.
  7. 8. 4-sided figure.
  8. 10. The center of mass of a geometric object of uniform density.
  9. 11. The theorem that applies to right triangles and gives the measurements of missing angles.
  10. 12. At an angle of 90° to a given line, plan, or surface.
  11. 14. The line segment connecting the midpoints of two sides of a triangle.
  12. 16. A branch of mathematics concerned with the properties and relations of shapes, points, lines, and surfaces.
  13. 20. The angles outside of a shape or lines.
  14. 22. 3-sided polygon, with 3 edges and 3 vertices. And 3 interior angles added together is always equal to 180°.
  15. 23. A proposition proved by a chain of reasoning.
  16. 24. The perpendicular drawn from the vertex of the triangle to the opposite side, also known as the height of a triangle.
  17. 26. The pair of matching sides or angles that are placed in the same spot in two different shapes.
  18. 27. A triangle with a right angle.
  19. 28. A line segment joining a vertex to the midpoint of the opposite side.
  20. 32. A part of a figure cut off by a line or plane intersecting it.
  21. 34. A plane figure with 6 sides and 6 angles.
  22. 37. A shape that has 4 sides and 4 angles, all angles are right, opposite sides are parallel, and all sides are congruent.
  23. 38. The side that is furthest away from another in a shape.
  24. 40. At right angles to a horizontal plane.