Determine if the two triangular pyramids are similar.

Match up the corresponding parts.

no they are not similar

Step-by-step explanation:

8/12 does not reduce to the same amount that 6/8 and 12,16

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.