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Triangle A B C is cut by line segment S T. Line segment S T goes from side A B to side C B. Lines S T and A C are parallel. The length of S B is 10 feet, the length of B T is 9 feet, and the length of C T is 2.7 feet.
What is the length of Line segment S A?

1.89 ft
2.43 ft
3 ft
7 ft

Respuesta :

Tutorconsortium330

In the triangle ABC, the length of the line segment SA=3 ft ( 3rd option).

In triangle ABC,

  • SB=10ft
  • BT=9ft
  • CT=2.7ft &
  • ST|| AB

According to the triangle proportionality theory, we know that if a triangle has a line segment parallel to one of its sides, the line segment splits the other sides correspondingly.

Hence,

SA/SB=CT/BT

⇒SA/10=2.7/9

⇒SA=(2.7*10)/9

⇒SA=3

So, the length of SA is 3 ft.

Therefore the 3rd option is correct.

Learn more about the triangle proportionality theory

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