Respuesta :

Radeblade

Answer:

B - 70

Step-by-step explanation:

The angles in a triangle always add up to 180.

70+40=110

180-110=70

NancyWood123

Answer:

70 degrees

Step-by-step explanation:

  • All triangles have 3 angles that add up to 180 degrees
  • How to solve:
  • 40 + 70 + a = 180 // make equation
  • 110 + a = 180 // add like terms
  • - 110       - 110 // subtract 110 on both sides
  •         a = 70
  • 70 degrees

Hope this helps :)