Question

the three angles of a quadrilateral are 105°,115°,and 80° . then the fourth angle____​

Answer 1

Step-by-step explanation:

$sum \: of \: the \: three \: angles$

$(105 + 115 + 80) degree$

$= 300 \: degree$

$\: \: \: \: the \: fourth \: angle \: measures$

$(360 - 300)$

$= 60degree$

∆Hence the fourth angle measures 60°

Answer 2

Step-by-step explanation:

PLZ MARK IT AS BRAINLIEST ANSWER IF YOU LIKE IT.....