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