Best explained and correct answer gets brainliest.

The triangles AEC and BFD are similar because of AA similarity postulate.

Angles C and D are congruent
Angles E and F are congruent so are
Obs:
Angles A and B since the sum of all angles in any triangle is 180 degrees.

If the triangles are their sides are in proportion.

BD/AC= DF/CE so
BD/6= (6+2)/(6+4)
BD= 6•8/10=4.8

Answer B) BD=4.8

Just turn the whole gym into pie

The answer is a hope i