3 years ago

Find the missing angle measurement! Please show/tell me what u did to solve the problem aswell

Mathematics

1 answer:

Pani-rosa [81]3 years ago

8 0

Answer:

x = 12

Step-by-step explanation:

The sum of exterior angles is = 360

one of the angle is given we will need to add all three angles

128 + 8x + 11x + 4 = 360 add like terms

19x + 132 = 360 subtract 132 from both sides

19x = 268 divide both sides by 19

x = 12 replace x in required expressions to find the measure of the angles

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