Question

please help me this question please ​

Answer 1

In first figure

we can see it is a quadrilateral

sum of all angles in a quadrilateral = 360°

$50 + 130 + 120 + x = 360 \\ x = 360 - 300 \\ x = 60$

x=60°

in second figure

it is a pentagon with all sides equal

it is a equilateral pentagon

take angle as = x

sum of all angles of a pentagon = 540°

$x + x + x + x + x = 540 \\ 5x = 540 \\ x = 108$

so x = 108°