Finding the sum of the measures of the interior angles of a convex nonagon

7 pie

Step-by-step explanation:

the sum of the interior angles of a nonagon is 1260 degrees.

Now The sum of interior angles of a convex N-sided polygon equals to π(N−2) radians.

In case N=9 (nanogon)

this sum is

π(9−2)=7π (radians)

x= -3

step-by-step explanation:

step 1: simplify brackets

4 - x - 1 = 6

step 2: simpilfy

3 - x = 6

step 3: subtract 3 from both sides

-x = 6 - 3

step 4: simpilfy 6 - 3

-x = 3

step 5: multiply both sides by -1

x = -3