If you select one vertex of a heptagon and draw diagonals to all other vertices, you will divide the heptagon into 5 triangles such that the interior angles of the heptagon add up to the same sum as the interior angles of the five triangles.
Now the sum of the interior angles of one triangle is 180 degrees. So for 5 triangles you get 5*180 = 900 degrees.
In general, the interior angles of a polygon with n vertices is (n - 2)*180 degrees.
The 7 interior angles of a heptagon add up to 900 degrees
The interior angles add up to 3240 degrees
The 6 interior angles add up to 720 degrees
They add up to 360 degrees
A quadrilateral doesn't have degrees. It has four sides, four inside angles, four outside angles, a perimeter, and an area. If you add up the measures of all four outside angles, they add to 360 degrees. If you add up the measures of all four inside angles, they add to 360 degrees too.
(6-2)*180 = 720 degrees.
It Adds Upp Too 180..x
A trapezium is a 4 sided quadrilateral and its 4 interior angles add up to 360 degrees
The angles of a rectangle are 90+90+90+90= which make it to 360 degrees. Please add trust points too.