Across
- 2. a triangle with all sides equal and all angles equal
- 3. A line that crosses at least two other lines.
- 9. Two distinct lines intersecting each other at 90° or a right angle.
- 10. Lines that never intersect.
- 11. the vertical axis.
- 13. an angle smaller than 90 degrees
- 16. a pair of opposite angles formed by intersecting lines.
- 17. an angle inside a shape.
- 18. the point of concurrency of the three altitudes of a triangle.
- 19. the intersection point of two sides of a plane figure
- 20. The line that divides something into two equal parts.
Down
- 1. the horizontal axis.
- 4. an angle outside a shape.
- 5. an angle larger than 90 degrees
- 6. a triangle having three unequal sides and angles
- 7. a triangle which has two sides equal
- 8. a straight line extending from the center of a circle or sphere to the circumference or surface
- 12. slope of a horizontal line.
- 14. A line segment from a vertex (corner point) to the midpoint of the opposite side.
- 15. a transformation representing a flip of a figure.