Respuesta :

wegnerkolmp2741o

Answer:

1.  Find < ACB

2. Use that triangles =180 to find <B  = 41

Step-by-step explanation:

1.We need to find < ACB

<ACB +<DBC= 180 They make a straight line

Subtract DBC from each side

<ACB = 180 - <DBC  

We know DCB = 113

ACB = 180 -113

ACB = 67

2.The three angles of a triangle = 180, so we can then find <B

<A +<B + <ACB = 180

72 + B + 67 = 180

Combine like terms

139+ <B = 180

Subtract 139 from each side

<B = 180-139

<B =41

FlyingMintBunnyEngla

Okay so this is all about interior angles.

And interior angles all add up to 180.

Since 113 is an exterior, you need to find the interior of C.

180-113=67°

Interior of C is 67°

Add 67 and 72.

now, 180=B+139

Subtract 139 from 180.

Your answer should be AngleB= 41°