Across
- 3. : having all sides equal
- 7. : the middle number in a sorted list of numbers
- 9. : a line that bisects another line segment at a right angle, through the intersection point
- 10. : a two-dimensional geometrical shape whose sides are parallel to each other
- 12. : at equal distances.
- 13. : the one and only point in a triangle that is passed through by each of the three lines that divide in half one of its three angles
- 16. : the point where all three altitudes of the triangle intersect
- 17. : the line's direction as a vector
Down
- 1. : having equal angles.
- 2. : a regular quadrilateral, which has all the four sides of equal length and all four angles are also equal
- 4. : a type of quadrilateral, whose opposite sides are equal and parallel
- 5. : a quadrilateral with reflection symmetry across a diagonal
- 6. : a line that connects two vertices of a polygon or a solid, whose vertices are not on the same edge
- 8. : a straight line drawn from the vertex of a triangle to its opposite side in such a way, that it divides the angle into two equal or congruent angles
- 11. : the center of mass of a geometric object of uniform density.
- 14. : the point where the triangle's three perpendicular bisectors intersect
- 15. : a type of quadrilateral
- 18. : a four-sided shape which has one pair of sides as parallel