donavonross274 donavonross274
  • 13-12-2021
  • Mathematics
contestada

What is the length of DF?
F
За
IT
E
G
a +6
D
DF =

What is the length of DF F За IT E G a 6 D DF class=

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 14-12-2021

Answer:

  18

Step-by-step explanation:

Triangles FEG and DEG are congruent by SAS, so DG = FG.

  a+6 = 3a

  6 = 2a

  3 = a

  3a = 3·3 = 9 = FG = DG

DF = 9+9 = 18

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