Question

Answer it correctly l will mark as Brainiest

Answer 1

7.

Formula for sum of angles of a polygon having n sides = (n-2)×180°

Let the number of sides be n.

This is a regular polygon so it has all angles same.

156°×n=(n-2)×180°

156n=180n-360

24n=360

n=15

So, this polygon has 15 sides.

8.

Hexagon has 6 sides.

n=6

Sum of angles of polygon = (n-2)×180

=(6-2)×180

=4×180

=720°

Measure of one angle = 720°/6

= 120°

9.

This figure is a hexagon.

Sum of angles in a hexagon = 720°

x+75+x+2x+140+33=720

4x=720-248

4x=472

x=118°