Answer:
90
Step-by-step explanation:
let the 1 verticles be X and another be 2x
therefore X+2x =180
3x =180
X =180/2=90
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Answers & Comments
Answer:
90
Step-by-step explanation:
let the 1 verticles be X and another be 2x
therefore X+2x =180
3x =180
X =180/2=90