obedmalval04 obedmalval04
  • 24-09-2020
  • Mathematics
contestada

I need help an explanation

I need help an explanation class=

Respuesta :

BrainyAlice28
BrainyAlice28 BrainyAlice28
  • 24-09-2020

Answer:

45°

Step-by-step explanation:

3x + 4x + 5x = 180° **

12x = 180° / :12

x = 15°

m<A = 3×15 = 45°

** There is a law that the sum of all the angles in a triangle is equal to 180°

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