Question

three angle of quadrilateral is 70 90 and 75 the fourth angle is​

Answer 1

$\huge\fbox\red{\fbox\orange{Solution:-}}$

$\fbox\red{\fbox\green{Given:-}}$

$\red{3 \: angles \: of \: the \: quadrilateral }\\ = > \green{70°} \\ = > \blue{90° }\\ = > \pink{ 75°}$

$\fbox\red{\fbox\pink{To find:-}}$

$\purple{Find \: the \: fourth \: angle.}$

$\fbox\red{\fbox\green{Formula:-}}$

$\red{Sum \: of \: all \: the \: angles \: of \: the \: quadrilateral }\\ = \blue{360°}$

$\fbox\red{\fbox\orange{By the problem:-}}$

$\purple{4th \: angle } \\ = > \red{ 360 - (70 + 90 + 75)° }\\ = > \green{( 360 - 235)°} \\ = > \orange{125°}$

$\huge\fbox\red{\fbox\orange{Answer:-}}$

$\pink{125°}$