Across
- 4. - a four-sided, or quadrilateral, where all four sides are of the same length and each of the two pairs of opposite sides are parallel to each other
- 6. - a polyhedron with two congruent and parallel bases
- 8. - the perpendicular segment from a vertex to the opposite side or to the line that contains the opposite side.
- 12. - the three medians of a triangle.
- 14. - the point of concurrency.
- 15. - the lines containing the altitudes of a triangle.
- 17. - a ray, segment, or line that divides a given angle into two angles of equal measures.
- 18. - A four-sided shape which has one pair of sides as parallel.
Down
- 1. - a line that bisects a line segment in two equal parts and makes an angle of 90 degrees at the point of intersection
- 2. - An equilateral triangle is a three-sided polygon with all sides of equal length.
- 3. - A type of quadrilateral, where all sides are equal and diagnals intersect each other at 90 degrees.
- 5. - a regular quadrilateral, which has all the four sides of equal length and all four angles are also equal.
- 7. - a quadrilateral whose four sides can be grouped into two pairs of equal-length sides that are adjacent to each other.
- 9. - two figures where the point is the same distance from each figure.
- 10. - a segment from a vertex to the midpoint of the opposite side.
- 11. - the point of intersection of all the three interior angle bisectors of the triangle.
- 13. - A line segment joining two vertices of a polygon or polyhedron.
- 16. - A triangle with three interior angles equal to each other measured at 60° along with the sides of the same length