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Interior and Exterior Triangle Angles (0/5)
Please full explanation
I will mark brainlist to whoever answers first

Interior and Exterior Triangle Angles 05 Please full explanation I will mark brainlist to whoever answers first class=

Respuesta :

devishri1977

Answer:

     ∠R = 69

Step-by-step explanation:

Angle sum property

Sum of all angles of triangle = 180

     5x - 11 + 3x - 3 + 3x + 18 = 180

      5x + 3x + 3x  -11 - 3 + 18 = 180

Combine like terms

                             11x  + 4 = 180

                                   11x = 180 - 4

                                   11x = 176

                                      x = 176/11

                                       x = 16

∠R = 5x - 11

   = 5*16 - 11

   = 80 - 11

    = 69

Apply angle sum property

  • 5x-11+3x-3+3x+18=180
  • 11x+4=180
  • 11x=176
  • x=16

m<R

  • 5(16)-11
  • 80-11
  • 69°

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