Across
- 2. a quadrilateral with reflection symmetry across a diagonal
- 4. having equal angles
- 9. having all its sides of the same length
- 12. the point where the perpendicular bisectors of the sides of that particular triangle intersect
- 15. a simple quadrilateral with two pairs of parallel sides
- 16. a line segment through a vertex and perpendicular to a line containing the side opposite the vertex
- 17. the center of mass of a geometric object of uniform density.
Down
- 1. a line segment which bisects another line segment at 90 degrees
- 3. at equal distances
- 5. the point where all three altitudes of the triangle intersect
- 6. a plane figure with four equal straight sides and four right angles
- 7. the center of the incircle of a triangle or other figure
- 8. a four-sided shape whose corners are all ninety degree angles
- 10. a line that splits an angle into two equal angles
- 11. the value separating the higher half from the lower half of a data sample, a population, or a probability distribution
- 13. a parallelogram with opposite equal acute angles, opposite equal obtuse angles, and four equal sides
- 14. a straight line joining two opposite corners of a square, rectangle, or other straight-sided shape
