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Solve for x and then find the measurement of angle B

Solve for x and then find the measurement of angle B-example-1
User Oae
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1 Answer

17 votes
17 votes

Answer:

X = 6

<B = 126

Explanation:

Since two horizontal lines are parallel, it's shown with the notches at the tip,

We can conclude that A and B has same measurement because they are alternate exterior angles therefore:

<A = <B

8x + 78 = 2x + 114 export like terms to same side of the equation

8x - 2x = 114 - 78

6x = 36 divide both sides by 6

x = 6

To find the value of angle B replace x with 6

2*6 + 114 = 126

User HoNgOuRu
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