heptagon octagon nonagon
regular polygon irregular
compass diameter radius
chord circle congruent
inscribed central pentagon
convex concave square

__1.Closed plane figure formed by line segments
__2. Set of all points from a fixed center point
__3. Polygons whose sides are of equal measurement
__4. Polygons whose sides have unequal measurement
__5. Polygons with diagonals outside
__6. Polygons with all diagonals inside it
__7. Polygon with 9 sides
__8. Polygon with 7 sides
__9. 2 polygons with same side and angle measure
__10. Instrument used in drawing circles
__11. A segment joining two points in the circle
__12. Longest chord
__13. Half of the diameter
__14. Angle whose vertex is the circle’s center
__15. Angle whose vertex is on the circle

help po please kailangan na kailngan ko lang po.complete answer po dapat.