Answer:
900 degrees
Explanation:
So what you do is find how many triangles there are in a shape by counting the number of sides.
This has 7 sides.
So you use the formula 180(n - 2) to find the sum of all interior angles and to find the number of triangles in a shape.
180(7 - 2)
7 - 2 = 5
They're 5 triangles in a heptagon.
180(5) = 900
So the final answer is 900 degrees.
Hope it helped!