∆ADC is formed by reflecting ∆ABC across line segment , as shown in the figure. If the length of is 4 units, the area of ∆ADC is square units.

1935/10,000= 387/2000the answer to the question is c

The first answer is correct

“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .