Understands volume, attributes of 2-D figures, and the coordinate plane Grade 5 Module 5 Name: 5.G.3, 5.G.4 1. Identify the most specific name for the given shapes. Word Bank: Kite Parallelogram Trapezoid Rectangle​

answer:

a=9

step-by-step explanation: lmk if you need a explanation

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.