Question

the sum of inner angle and outer. angle at a vertex is what?​

Answer 1

$\huge\mathbb\fcolorbox{purple}{lavenderblush}{❥ศռรฬєг࿐}$

180°

The sum of the internal angle and the external angle on the same vertex is 180°.

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Answer 2

Answer:

360°

Step-by-step explanation:

(360-x)+(x)=360°