Select ALL the expressions that represent the area of the shaded rectangle. A. 3(10-c)
B. 3(c-10)
C.10(c-3)
D.10(3-c)
E.30-3c
F.30-10c

An equilateral triangle

Step-by-step explanation:

Because an equilateral has a feature that all sides have the same length and all angles are of the same, it does not matter from which side and peak the centroid, circumcenter, incenter and orthocenter is created, they would always end up at the same point.