A side of the triangle below has been extended to form an exterior angle of 72°. Find the value of xx
2 answers:
Answer:
x=52
Step-by-step explanation:
The exterior angle of the triangle is equal to the sum of the opposite interior angles
72 = 20+x
72-20 = 20+x-20
52 =x
x + 20 = 72
x + 20 - 20 = 72 - 20
x = 52
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