Give a polygon with 13 sides, find sum of the measure of its interior angles. a polygon with 13 sides has an interior angle measure sun of

sum of interior angles is 1980°

Step-by-step explanation:

(n-2)×180° = (13-2)×180°

= 11×180°

= 1980°

true? is that what you're asking or do you mean something else?

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐