What is the length of the missing base of the trapezoid?

3 in
8 in

area= 21 in2

If lmn=xyz, which congruences are true by cpctc? check all that apply

Which equation represents a circle with a center at (–3, –5) and a radius of 6 units? (x – 3)2 + (y – 5)2 = 6 (x – 3)2 + (y – 5)2 = 36 (x + 3)2 + (y + 5)2 = 6 (x + 3)2 + (y + 5)2 = 36

Which undefined geometric term is described as a location on a coordinate plane that is designed by an ordered pair (x,y) ?