11. Note that this is only the case if the source is close to an ideal point source. 12. This is the ideal point to begin a short tour of the surrounding El Cid Historic District. 13. This can be conceptualized and mathematically developed as an ideal point or collection of " approximations ". 14. Each family of parallel lines in a given direction is postulated to converge to the corresponding ideal point . 15. A company considering introducing a new product will look for areas with a high density of ideal points . 16. Southsea seafront was an ideal point from which to witness the International Fleet Review and evening firework display. 17. The centres of the horocycles are the ideal points of the perpendicular bisector of the line-segment between them. 18. This is best done by placing both the ideal points and the competing products on the same map. 19. Areas where there is a cluster of ideal points ( such as A ) indicate a market segment. 20. For an ideal point source, the intensity of the Arago spot equals that of the undisturbed wave front.
