Respuesta :

x+11+x+7+x=180
3x+18
-18. -18
3x=162
x=54

54+11=65=a
54+7=61=c
b=54
If it is asking you for the whole triangle then 180, all triangles equal 180 degrees

Answer:

angle A=125 angle B= 114 angle C= 121

Step-by-step explanation:

first you have to find x so that you can find each angle

the interior angles of a triangle is equal to 360

add the angles together x+x+7+x+11=360

combine like terms 3x+18=360

subtract 18 on both sides 3x=342

divide by 3 on both sides x=114

to find angles:

plug in X to each side

(114)+7 = angle C

(114)+11= angle A

114= angle B

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