Across
- 5. the point where all three altitudes of the triangle intersect
- 10. a line that bisects another line segment at a right angle, through the intersection point
- 12. a quadrilateral with reflection symmetry across one of its diagonals
- 13. a special type of quadrilateral that has both pairs of opposite sides parallel and equal
- 14. a line segment through a vertex and perpendicular to a line containing the side opposite the vertex
- 15. a triangle that has all its sides equal in length
- 17. a closed 2-D shape, having 4 sides, 4 corners, and 4 right angles (90°)
- 18. the point of intersection of all the three interior angle bisectors of the triangle
Down
- 1. a ray, segment, or line that divides a given angle into two angles of equal measures
- 2. a quadrilateral with all equal sides
- 3. a line segment joining a vertex to the midpoint of the opposite side
- 4. shape with 4 equal sides and every angle is a right angle
- 6. a triangle in which angles are congruent and all sides are of equal length
- 7. an important concept related to a triangle
- 8. the point where the perpendicular bisectors of the sides of that particular triangle intersect
- 9. a line segment connecting the opposite vertices or the non-adjacent vertices of a polygon
- 11. being the same or equal distance
- 16. a quadrilateral having two parallel sides and two non-parallel sides.