Geometry Puzzle

4. having all or corresponding angles equal.
6. a line segment joining two vertices of a polygon or polyhedron, when those vertices are not on the same edge.
7. the point where three bisectors of the interior angles of a triangle intersect and it is the center of the inscribed circle.
10. the middle number in a sorted list of numbers
13. a type of quadrilateral, whose opposite sides are equal and parallel. It is a four-sided polygon that has four angles, equal to 90 degrees.
14. a line that passes through two very specific points on a triangle: a vertex, or corner of a triangle, and its opposite side at a right, or 90-degree, angle.
15. a point which is at the same or equal distance from two given points
16. the point where the triangle's three perpendicular bisectors intersect
17. the point where the perpendicular drawn from the vertices to the opposite sides of the triangle intersect each other

1. quadrilaterals that have two parallel sides and two non-parallel sides.
2. a line that bisects a line segment in two equal parts and makes an angle of 90 degrees at the point of intersection.
3. a simple quadrilateral with two pairs of parallel sides.
5. a four-sided regular polygon which is also known as a quadrilateral with four equal sides
8. a quadrilateral with reflection symmetry across a diagonal.
9. a line that splits an angle into two equal angles
11. a triangle that has all its sides equal in length
12. the center of mass of a geometric object of uniform density.