You can get a list of all flights arriving at a given airport by selecting the By Airport tab. Or you can see a list of all flights on a given route by selecting By Route. You can usually determine which flight you should track from the route and timing information.
A square is a regular polygon. It has four lines of symmetry and four sides. A regular pentagon has 5 sides and 5 lines of symmetry. The number of lines of symmetry in a regular polygon is equal to the number of sides.
Explain to the student that a line of symmetry is an imaginary line that divides a figure into two congruent parts, each of which is the mirror image of the other. Provide the student with a mirror. Have the student use the mirror to determine if a line drawn is actually a line of symmetry. Provide additional practice through a symmetry sort. Provide the student with two-dimensional figures (some with lines of symmetry and some with lines drawn that are not lines of symmetry).