isaacr4445 isaacr4445
  • 03-05-2022
  • Mathematics
contestada

Give the value of x .

A. 60 degrees
B. 180 degrees
C. 120 degrees
D. 45 degrees

Give the value of x A 60 degrees B 180 degrees C 120 degrees D 45 degrees class=

Respuesta :

msakerj
msakerj msakerj
  • 04-05-2022

Answer:

x=120°

Step-by-step explanation:

sum of all angles in a triangle is equal to 180

let the unknown angle be

[tex] \alpha [/tex]

[tex]60 + 60 + \alpha = 180 \\ \alpha = 180 - 60 - 60 \\ \alpha = 60 \\ [/tex]

[tex] \alpha + x = 180 \\ x = 180 - \alpha \\ x = 180 - 60 \\ x = 120[/tex]

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