jetblackcap jetblackcap
  • 03-02-2019
  • Mathematics
contestada

Please help me!!!!!!!!!!!!!

Please help me class=

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 03-02-2019

Answer:

b=70

Step-by-step explanation:

The sum of the opposite angles of a triangle is equal to the exterior angle

a+b = 140

We know that a=b since PQ = RQ

The angle  opposite equal sides are equal

Replace a  with b since a =b

b+b = 140

2b = 140

Divide by 2

2b/2 =140/2

b = 70

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