Specific Number of Options Definition The Statistical Questions must contain a specific topic. For instance the question must contain a focus. *Number of pets people who live in your neighborhood have, etc. Statistical Questions must also have a specific population.
A reflection is a flip of an object over a line. Let's look at two very common reflections: a horizontal reflection and a vertical reflection. Notice the colored vertices for each of the triangles. The line of reflection is equidistant from both red points, blue points, and green points.
Line Symmetry. Basically, a line of symmetry is a line that divides a figure into two mirror images. The figure is mapped onto itself by a reflection in this line. A set of points has line symmetry if and only if there is a line, l, such that the reflection through l of each point in the set is also a point in the set. (May also be referred to as reflectional symmetry.). Certain figures can be mapped onto themselves by a reflection in their lines of symmetry.