ameliaowen2007
ameliaowen2007 ameliaowen2007
  • 08-11-2020
  • Mathematics
contestada

what is the measure of ABC?

what is the measure of ABC class=

Respuesta :

saijuchacko saijuchacko
  • 08-11-2020

Answer:

Using exterior angle theorem, we can find the answer.

x+45+3x = 6x+5

4x+45 = 6x+5

45 = 2x+5

40 = 2x

x = 20

TO FIND <ABC, WE WILL NEED TO FIRST FIND THE EXTERIOR ANGLE.

6x+5

= 6(20)+5

= 120+5

= 125

m<ABC:

180-125               (REASON: linear pair)

= 55

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