Question

Find the value of x , then find the measure of angle A ( show your work ).

Answer 1

Explanation:

2x+2+6x+4=120°(exterior angle of a triangle is equal to the sum of its opposite interior angle)

8x+6=120

8x=120-6

8x=114

x=114/8

x=14.25

now,

angleA=2x+2

• 2×14.25+2
• 28.5+2
• 30.5°

hope it helps.