Across
- 5. Quadrilateral with opposite sides parallel.
- 8. Trapezoid: Trapezoid with congruent legs.
- 10. Angle: Angle measuring less than 90 degrees.
- 12. Flat, infinite 2D surface in geometry.
- 14. Quadrilateral with one pair of parallel sides.
- 16. Triangle: Triangle with at least two equal sides.
- 17. Lines or segments meeting at a right angle.
- 19. Bisector: Line dividing an angle into two equal parts.
Down
- 1. Points on the same straight line.
- 2. Exterior Angle Sum: Sum of exterior angles in a polygon is 360 degrees.
- 3. Angles: Angles whose sum is 180 degrees.
- 4. Parallelogram with all sides equal.
- 6. Point dividing a segment into two equal parts.
- 7. Formula: Formula for finding distance between two points.
- 8. Point where angle bisectors meet in a triangle.
- 9. Educated guess or unproven statement.
- 11. Reverse order of hypothesis and conclusion in a statement.
- 13. Logical statement with reversed terms and negations.
- 15. Opposite of a conditional statement.
- 18. Pair: Supplementary angles in the same line.